Caller Unknown
Hardback Published on: 09/04/2026
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Synopsis
They Took Her Daughter. Now She’ll Break Every Rule to Get Her Back.
Simone's holiday to Texas was meant to be some much needed bonding time with her teenage daughter, Lucy.
On their first night in the desert, Simone wakes to find Lucy missing and a mobile phone in her place. The phone rings: Lucy has been taken and, in order to get her back, Simone must commit a crime.
As Simone prepares to follow the kidnapper's instructions, she feels certain that there is nothing she wouldn't do to save Lucy. But becoming a wanted woman is just the start...
Publisher information
- Publisher: Penguin Books Ltd
- ISBN: 9780241648056
- Number of pages: 400
- Dimensions: 242 x 163 x 37 mm
- Weight: 616g
- Languages: English
Customer Reviews
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The holiday reunion with a difference
Gillian McAllister moves the action of her latest book to the southern USA in this, a story of kidnap, intrigue and very high stakes, when Simone Seabourn ... READ MORE

Chris Scotland
This reviewer received a free of charge product for review.
Engaging thriller
An unsettling thriller about a kidnapping having disastrous results. British mother and daughter plan a camping holiday in Texas. However after meeting up,... READ MORE

Romany

Not a Thriller
How should a mother react if her teenage daughter is kidnapped? How should a father? Does it matter if you love her more than your spouse? Simone has fl... READ MORE

Denis
This reviewer received a free of charge product for review.
Caller Unknown
British restaurant owner Simone flies out to the States to meet up with daughter Lucy who's just completed a summer camp in Texas
The tranquil mother/da... READ MORE

Big Bertha
This reviewer received a free of charge product for review.
Scary Vacation!
Wow! Simone is the kind of mother that everyone needs! And this book is a wild ride of a nightmare that started as a simple vacation to Texas to pick up he... READ MORE

K. Bickmore

Great thriller!
Simone and her daughter, Lucy are on vacation in Texas before Lucy leaves for the university. When Simone wakes up, Lucy is gone and there is a message - ... READ MORE

PRISCILLA JOSSELYN

High Intensity Thriller
Review of ‘Caller Unknown’ by Gillian McAllister due to be published on 9 April 2026 by Michael Joseph, Penguin Random House.
Simone can’t wait to meet ... READ MORE

Andrea R

A little disappointing
This is the 8th book by Gillian McAllister that I’ve read – I have always enjoyed her twisty thrillers and was excited to read Caller Unknown.
Simone is... READ MORE

KindigBlog
This reviewer received a free of charge product for review.
Gillian McAlister's most gritty and suspenseful novel to date
Gillian McAlister's most gritty and suspenseful novel to date. We are introduced to our main character, Simone, who is meeting her daughter, Lucy, for some... READ MORE

pickup.a.book
This reviewer received a free of charge product for review.
Caller Unknown
I am a big fan of this author and have absolutely loved every book she has delivered. Up to now. This one didn't really hit the spot for me, although I did... READ MORE

Ashrae

unputdownable
This is another brilliant read from Gillian McAllister. If I am honest, the blurb didn’t massively appeal to me but knowing I felt the same way about Wrong... READ MORE

Rachael Derham
This reviewer received a free of charge product for review.
Superb thriller
A superb thriller which was extremely difficult to put down. It's the story of a British mother and daughter who are meeting up in the US for a holiday, fo... READ MORE

Matt Johns
This reviewer received a free of charge product for review.
An Exciting Read
This is a very enjoyable read, it asks the question How far would you go to protect your child? .Set In Texas the descriptions are great I really felt I wa... READ MORE

Chrissie Mortimer

Caller Unknown
There is nothing that Simone won’t do for her daughter, Lucy. The two have always been close, and with Lucy about to leave home for university, they depart... READ MORE

Helen Larkin
This reviewer received a free of charge product for review.
Slow burn thriller
4* Caller Unknown - Gillian McAllister.
Simone arrives in Texas excited about catching up with her daughter, Lucy, who has been at camp. Arriving at th... READ MORE

Nic Johnston
This reviewer received a free of charge product for review.
Gripping thriller
A gripping thriller that pulls you in from the start but slows down enough throughout the middle of the book to develop the main characters and explores th... READ MORE

Sue Jack
This reviewer received a free of charge product for review.
A superb thriller - extremely difficult to put down
A superb thriller which was extremely difficult to put down. It's the story of a British mother and daughter who are meeting up in the US for a holiday, fo... READ MORE

Matt Johns
This reviewer received a free of charge product for review.
Full of twists!
Simone can’t wait to be reunited with her daughter Lucy .
They’re meeting up in a remote cabin in the Texan desert.
There are a few blips in Simone’s jou... READ MORE

Zoe Hitchen
This reviewer received a free of charge product for review.
Absolutely gripping!
Firstly, thank you NetGalley for the opportunity to read Caller Unknown by Gillian McAllister.
I think I need to begin by saying WOW! This is the 1st b... READ MORE

The last place you look

Tense read
Simone flies to Texas to meet her daughter Lucy who is at acting camp. There are having a mother and daughter thing and are going to go camping. Before the... READ MORE

Michelle De Alwis
This reviewer received a free of charge product for review.
A gripping read
Thank you to NetGalley for this ARC!
This book sounded so promising from the synopsis and I’ve loved all the books I’ve read by Gillian McAllister, so ... READ MORE

Aimee Sviksa-Bray

Gripping domestic thriller
This was a gripping read told primarily from the viewpoint of Simone who has just met up with her daughter Lucy in Texas where Lucy has been spending some ... READ MORE

Sarah Goldthorpe
This reviewer received a free of charge product for review.
Disturbing!
Gillian McAllister is one of the authors whose books I will read when I want something to keep me on the edge of my seat. Having your child taken no matte... READ MORE

Susan Frances
This reviewer received a free of charge product for review.
Wow wow wow
Wow this book was absolutely brilliant it had me hooked from the first chapter and I could not put it down. Simone’s in the US to meet her only child Luc... READ MORE

AngieO
This reviewer received a free of charge product for review.
Addictive read
Another addictive read from Gillian. As a mother this was an uncomfortable read at times - what would I have done in this situation?
Interesting character... READ MORE

Karen Kingston
This reviewer received a free of charge product for review.
“Your children are only ever on loan to you”
Simone and Damien’s daughter Lucy, where is she? Hair is found…is it Lucy’s? A phone call….’We have your daughter!’ And so it begins. Simone will do anythi... READ MORE

Kim
This reviewer received a free of charge product for review.
Brilliant.
When things go from bad to worse, what do you do? This is one of those reads, and what a read it was.... Your daughter is kidnapped, and there is only ... READ MORE

Georgina
This reviewer received a free of charge product for review.
Good and engaging
I found this to be a slower read compared to Gillian McAllisters' other books,but it was still a good and engaging story.
Simone and Lucy were really infu... READ MORE

Lovetoread2023

A Mother's Love Knows No Bounds
Gillian McAllister has delivered yet another powerful, lingering read.
When Simone's daughter Lucy is kidnapped for ransom, what follows is a fraught, su... READ MORE

Diane Elizabeth Taylor
This reviewer received a free of charge product for review.
Did not disappoint
I have read most of Gillian’s books so thank you to NetGalley for this thrilling arc I have been lucky enough to read and review.
This book really pulled ... READ MORE

Keeley Hodgman
This reviewer received a free of charge product for review.
Caller Unknown by Gillian McAllister
Caller Unknown by Gillian McAllister is about what would a mother do to save her daughter, how far would she go? There is nothing Simone wouldn’t do for he... READ MORE

Christine Rennie

Fab twist at the end!
I was hooked on the latest Gillian McAllister book "Caller Unknown" by the first pages. Another great book from this writer. Watch out for the fab twist at... READ MORE

Mel Pretorius

Breathtaking!
This book should have been called Breathless. That’s what I was, from the beginning to the end. One of the best books I’ve read this year, and very highl... READ MORE

Carole Kendal

Where’s Your Line?
I love Gillian McAllister books. At this point, I think I would read her re-telling of the phone book and devour it in a few hours - she spins great yarns,... READ MORE

Kerry Young
This reviewer received a free of charge product for review.
Excellent thriller!
I thoroughly enjoyed this novel, particularly as I was reading it in TEXAS exactly where it was set! I’d even been to Galveston, having returned from a cru... READ MORE

Annette Librarian
This reviewer received a free of charge product for review.
Pulled in…..and disappointed
I’ll start by saying this: I’ve never read a Gillian McAllister novel before, but with the way people rave about her, I went in expecting to have my socks ... READ MORE

CathV
This reviewer received a free of charge product for review.
⭐️⭐️⭐️⭐️⭐️
Caller Unknown has a really different vibe to Gillian McAllister’s usual books but was thoroughly enjoyable.
A mother-daughter trip to Texas for Simone a... READ MORE

Stella Wright
This reviewer received a free of charge product for review.
Driven by fear, strength, and determination, this book is a must‑read!
Simone and her daughter Lucy arrive in a very remote Texas cabin for the first night of their mother daughter holiday. A holiday to give them precious tim... READ MORE

Claire
This reviewer received a free of charge product for review.
Absorbing
When I first picked this book up I was drawn in from the very beginning. The pace was fast and snappy and I flew through. However, my momentum slowed throu... READ MORE

Kayleigh Smith
This reviewer received a free of charge product for review.
The lengths a mother would go to…
I’m a huge fan of Gillian McAllister’s writing, and Caller Unknown was no exception. While it took me a little while to fully sink into the narrative, I th... READ MORE

Hasina Begum
This reviewer received a free of charge product for review.
Pacy and full of cliffhangers - such a fantastic book
I consider myself to be a Gillian McAllister fan and Caller Unknown is now one of my favourites of her books (along with How to Disappear and Wrong Place W... READ MORE

Nicola
This reviewer received a free of charge product for review.
The bond between a mother and daughter knows no bounds
Simone is visiting her daughter in Texas who has been attending a singing camp. They plan to explore the country by camping before Lucy returns to London t... READ MORE

Paula Sterling-stead
This reviewer received a free of charge product for review.
A great thriller from a great thriller writer!
A great book by one of my favourite authors. Caller Unknown explores the strength of the bond between mother and daughter especially on the cusp of losing ... READ MORE

Psychoticpat
This reviewer received a free of charge product for review.
A Mother’s love is fierce and true
If you are a mother you will be so invested in this story.
Simone is a strong female lead who will literally sacrifice her life for her only child Lucy. T... READ MORE

Denise Watson
This reviewer received a free of charge product for review.
Another absolutely outstanding book from Gillian!
Gillian McAllister does it again – Caller Unknown is another masterpiece of a thriller that took me through a whole range of emotions – from scared and my ... READ MORE

Carrie Beth
This reviewer received a free of charge product for review.
A compelling read
A fascinating read, clearly demonstrating the power of a mothers love. What would I do if I woke to find my child missing, a long way from home and familia... READ MORE

Sarah C
This reviewer received a free of charge product for review.
not for me
I found the premise intriguing but sadly the book did not live up-to it. Daughter kidnapped and this leads to a road trip to try and get her back.I found i... READ MORE

Helen Wilkinson
This reviewer received a free of charge product for review.
That Unbreakable Bond
Another excellent book from the pen of Gillian McAllister. Psychologically scary and compelling reading. I couldn’t put it down.
I love the way the autho... READ MORE

Gillian Frost
This reviewer received a free of charge product for review.
Excellent writing.
I love McAllister. I have been lucky enough to review most of her books through Netgalley. There is nothing I love more than to be invited to review her la... READ MORE

Danielle Dawkins
This reviewer received a free of charge product for review.
Thrilling !
Lucy- an only child - is currently in Texas having a gap year before returning home to begin an acting career at RADA.
Her doting mum Simone decides to ... READ MORE

Bookfiend
This reviewer received a free of charge product for review.
A quite compelling read
I did enjoy this book despite parts of it feeling a bit far fetched. Simone and her daughter, Lucy were interesting characters, although Simone was finding... READ MORE

Brenda Birkett
This reviewer received a free of charge product for review.
Tense, surprises, and extreme reactions
Simone's daughter Lucy is in the US. Simone is going to meet her, leaving her husband Damien to run their successful restaurant in the UK.
Apart from a ... READ MORE

Yvonne Bastian
This reviewer received a free of charge product for review.
A thrilling story
Gillian McAllister takes the reader on a rollercoaster ride through Texas to Mexico with a mother who will do anything to protect her daughter. The chapter... READ MORE

Carol Ellis

Tension, twists and truths!
⭐️⭐️⭐️⭐️⭐️
Caller Unknown has a really different vibe to Gillian McAllister’s usual books but was thoroughly enjoyable.
A mother-daughter trip to Texas ... READ MORE

Stella Wright
This reviewer received a free of charge product for review.
Riveting!
What a great thrilling read from start to finish. I was hooked from page one right to the very last one. It kept me guessing all the way through.

Bookworm
This reviewer received a free of charge product for review.
DNF at 52% - just didn't grab me, and normally I love her books
DNF at 52%.
Simone is a successful London chef, her daughter Lucy is about to take a position at RADA and they have planned a road-trip/camping trip in ... READ MORE

Alison Robinson
This reviewer received a free of charge product for review.
A solid 3 out of 5
I enjoyed this novel, not as much as Wrong Place Wrong Time, (that was a great read) so a tough one to compare to.....saying that... I've just looked back ... READ MORE

@SezzThomas
This reviewer received a free of charge product for review.
Caller Unknown
5 stars
Caller Unknown by Gillian McAllister is about what would a mother do to save her daughter, how far would she go? There is nothing Simone wouldn’t ... READ MORE

Christine Rennie

Fantastic Thriller
Imagine, you have travelled over to Texas to spend time with your daughter. You book into a cabin, looking forward to a holiday and family time. You wake u... READ MORE

Andrea H
This reviewer received a free of charge product for review.
How far would you go to protect your child?
Simone is counting down the days, quite literally, until she will be reunited with her daughter Lucy who is in Texas before heading off to RADA. Lucy arran... READ MORE

Stephanie Bull
This reviewer received a free of charge product for review.
So clever!
Simone is looking forward to a road trip with her daughter Lucy as she touches down in Texas. She meets Lucy and they check in to a cabin for one night bef... READ MORE

Gerry Lee
This reviewer received a free of charge product for review.
The perfect balance of being character-driven whilst still very much a thriller
Caller Unknown is a fast paced, tense story of a mother desperately trying to rescue her kidnapped daughter in an unfamiliar (to her) setting: Texas, USA. ... READ MORE

Laura Nazmdeh
This reviewer received a free of charge product for review.
FANTASTIC!
Thank you to the publishers for this early review copy - publishing April 2026 - so get the pre orders in now guys.
Gillian McAllister is a fantastic auth... READ MORE

Fiona Sharp

Gripping compelling thriller
Simone is meeting up with her daughter Lucy to spend time with her. They are staying in a remote lodge in Texas when Lucy is kidnapped, and Simone is blac... READ MORE

Frances Heaton

A book full of moral dilemmas and family relationships
This is a book that asks that age old question in many novels - how far would you go to save your child? Simone Seaborn runs a restaurant in London with h... READ MORE

Lynda’s Book Reviews
This reviewer received a free of charge product for review.
Every parent's worst nightmare!
This book was a little different to that which was expected. The story starts with a truly gripping few chapters, whereby Simone Seaborn’s daughter, Lucy,... READ MORE

Lynsey (To read or not to read)
This reviewer received a free of charge product for review.
Gripping story
Caller Unknown by Gillian McAlister was a very engrossing tale from the start. Where could Lucy have disappeared to?.
Simone has travelled to Texas to s... READ MORE

Nic. C/ Nickiknackinoo
This reviewer received a free of charge product for review.
Another great read
Simone is a very protective mother to her daughter Lucy at the risk of alienating her husband. She flies out to Texas to meet Lucy for a girls camping trip... READ MORE

Trina Dixon

Every parent's nightmare.....
Simone goes to visit her daughter Lucy who is on holiday in Texas. Simone wakes up to find Lucy gone and a burner phone in her place.
'Caller Unknown', do ... READ MORE

Susan Manley
This reviewer received a free of charge product for review.
Great thriller
You know when you see a one word review on the front of a book - something like 'Unputdownable' or 'Breathtaking' and you think to yourself, Oh Really. Wel... READ MORE

peter_badger
This reviewer received a free of charge product for review.
A gripping read
Your children are only ever on loan to you…Simone Seaborn flies into Texas from the United Kingdom to meet her 18-year-old daughter Lucy who has been atten... READ MORE

Celia Short
This reviewer received a free of charge product for review.
Very Good
This is the first novel I have read by Gillian McAllister and I have enjoyed her writing. The story explores the bond between mother and daughter and paren... READ MORE

Steven Capel

Page Turner
I took a while to get into reading this book, and was a bit concerned about some of the decisions made, and wondered if it was going to become a bit 'preac... READ MORE

Mags
This reviewer received a free of charge product for review.
Outstanding and didn’t disappoint
I have read most of Gillian’s books so thank you to NetGalley for this thrilling arc I have been lucky enough to read and review.
This book really pulled ... READ MORE

Keeley Hodgman
This reviewer received a free of charge product for review.
Nail biting and suspenseful!
A different novel from Gillian McAllister. As nail biting and suspenseful as ever but without the twists we have come to love. Caller Unknown is the story ... READ MORE

Rachel Dixon

Well written pulse pounding thriller
I adore a Gillian McAllister novel, and so when I received an advanced copy from the publishers via Net Galley I was delighted. As usual this author's writ... READ MORE

Mary C
This reviewer received a free of charge product for review.
Gripping
⭐️⭐️⭐️⭐️⭐️
A gripping story, I read it on holiday and didn’t want to put it down to do anything else. I had no idea how the situation would resolve itse... READ MORE

Maria Hall
This reviewer received a free of charge product for review.
Absolutely Amazing
Woah! This was just fantastic. I've thought before that Gillian McAllister is at the top of her game but then she outdoes herself! Absolutely amazing.

Angela Grove

Character driven high stakes thriller
Thank you to Netgalley and the publisher for my e-arc ?I don't usually enjoy domestic thrillers or books exploring mother and daughter dynamics but this ha... READ MORE

Violet Daniels
This reviewer received a free of charge product for review.
Good read
Simone is happily married to Damien, with a daughter Lucy. Lucy has gone to America for a course. Simone has travelled there so they can take a holiday tog... READ MORE

Marcia Cyr

what lengths would you go to in order to save your child?
I finished this book based in the hot arid Texas deserts on the first day of winter! Sabine goes to Texas to visit her daughter Lucy for one last bonding c... READ MORE

Helen Carey
This reviewer received a free of charge product for review.
Gripping and emotional
Simone meets up with her daughter for a holiday in Texas. The accommodation on arrival isn't the best as the door won't secure. Was this deliberate? Simone... READ MORE

Beverley Riley
This reviewer received a free of charge product for review.
The most interesting aspect of ‘Caller Unknown’ is the exploration of the maternal bond.
Gillian McAllister sets her latest novel, ‘Caller Unknown’ in Texas, where renowned chef, Simone, has travelled to meet her eighteen year old daughter, Luc... READ MORE

Sarah D
This reviewer received a free of charge product for review.
Thrilling read!
“A mother's love for her child is like nothing else in the world. It knows no law, no pity. It dares all things and crushes down remorselessly all that sta... READ MORE

Maureen Ellis

great holiday read
A great thriller that pulls you in very quickly and keeps you reading. Unbelievable in many parts but that’s a good escapism read! Great holiday read from ... READ MORE

Julie Fellows
This reviewer received a free of charge product for review.
Absorbing, compelling and addictive
This is not your ordinary story of kidnapping, its about the bond between a mother and daughter, a husband and wife. The opening line - 'Your children are ... READ MORE

Brian Wilde
This reviewer received a free of charge product for review.
I swallowed this book whole and it was delicious!
I swallowed this book whole and it was delicious!
Gillian McAllister can do no wrong in my eyes. Every single word, page, chapter etc is absolute perfec... READ MORE

Tina Jackson
This reviewer received a free of charge product for review.
A thriller that has everything
If you want edge of your seat, stay up reading all night then this thriller is a must read!
I did begin the 1st few chapters a little unsure because I fou... READ MORE

Joanna R
This reviewer received a free of charge product for review.
Sometimes a thriller grabs you from the first chapter & doesn’t want to let go
Rating: 4.25 stars
Sometimes a thriller grabs you from the first chapter & doesn’t want to let go, Caller Unknown did exactly that for me.
Set betwee... READ MORE

@janinereadsandreviews

Disappointing
I've loved Gillian's other thrillers so much, but I'm afraid Caller Unknown didn't land for me. At its strongest it's an examination of how far we will go... READ MORE

Sam Whittaker
This reviewer received a free of charge product for review.
tension and reveals.
I would describe this book as being about a very British family trapped in a nightmare in the Texan desert. Not something you read every day! It intrigued ... READ MORE

Nicola Pettitt
This reviewer received a free of charge product for review.
A thought provoking book
When Simone wakes to find her daughter missing and a stranger’s phone left behind, the story spirals into a gripping, high‑stakes chase that never lets up.... READ MORE

Caroline R
This reviewer received a free of charge product for review.
a very slow burn….
Simone arrives in Texas to spend some time with her daughter Lucy, they’re staying in the desert in a cabin where the door won’t shut / lock.. that itself ... READ MORE

Lucy C
This reviewer received a free of charge product for review.
intriguing
Anything that the author writes I will read, I love the journey that she brings us readers on and this is no exception.I really enjoyed that as well as fol... READ MORE

Mrsbookburnee
This reviewer received a free of charge product for review.
A captivating must read!
A captivating must read with a twist I didn’t see coming. I felt so transported into the world and like I was right there in the Texas heat. This is so cle... READ MORE

Bookworm87
This reviewer received a free of charge product for review.
An interesting thriller!
Simone arrives in Texas to join her teenage daughter Lucy for a two-week road trip. On the first night Lucy is kidnapped from the cabin where they’re stay... READ MORE

Joan Clapham

Good read.
I am a little on the fence with this thriller, all about maternal love and parenthood. The plotting is good but for me it just failed to deliver as I strug... READ MORE

Martha Brindley

Good read but implausible plot
I am a great fan of Gillian McAllister so I had high expectations of her latest novel 'Caller Unknown'. Set in Texas, the book explores the themes of the b... READ MORE

Shirley Sinha
This reviewer received a free of charge product for review.
A Rollercoaster!
Despite delays, lost luggage and airline ineptitude, Simone Seaborn has finally arrived in Texas, leaving husband Damien back home in London to run the res... READ MORE

June Walters
This reviewer received a free of charge product for review.
Holiday gone wrong
The lengths a Mother will go to in order to bring her Daughter home safely and in one piece. This definitely wasn’t the Mother Daughter holiday that Simone... READ MORE

ZoeForeverReading
This reviewer received a free of charge product for review.
Another Fab Thriller from Gillian McAllister!
I enjoyed this latest thriller from Gillian McAllister, one of my favourite authors.
The book is mostly told from Simone’s point of view, with occasional... READ MORE

Nicki M
This reviewer received a free of charge product for review.
One of her best so far
I'm a big fan of Ms Mcallister's books, and think this is probably one of her best. A proper thriller with tension, red herrings, Texan desert, police chas... READ MORE

jean
This reviewer received a free of charge product for review.
Another cracking thriller from Gillian McAllister!!
Thank you to Netgalley and Michael J Brooks at Penguin Random House for the ARC of this fantastic book.Another cracking thriller by Gillian McAllister that... READ MORE

What_michelle_reads
This reviewer received a free of charge product for review.
Tense read
Great read, which kept me hooked from start to finish.
As a read this book I had a sense that it would also make a good film. Tense read.

Fiona Morris

Another great read by Gillian McAllister
I absolutely love a Gillian McAllister book and this latest book did not disappoint. I could not read it quick enough. Short chapters, written from differe... READ MORE

Rebecca Field
This reviewer received a free of charge product for review.
Twists & turns aplenty!
I can’t praise this latest book highly enough, possibly my favourite so far (but I probably say that every time I read Gillian’s latest book!) I was hooked... READ MORE

JP
This reviewer received a free of charge product for review.
A mother’s love knows no bounds
I always read Gillian McAllister’s work and this was another enjoyable read. In some ways though I felt I wasn’t the right audience for this one. Simone is... READ MORE

Homeburd
This reviewer received a free of charge product for review.
Intriguing thriller
Thank you NetGalley for this ARC of Caller Unknown by Gillian McAllister. The plot is unlike any other that I had read and pulled me in and grabbed my atte... READ MORE

Danielle Conroy
This reviewer received a free of charge product for review.
Unusual thriller
A really thrilling read, as all of Gillian McAllister's novels I have read have been. I was a bit unsure of the American setting at first (McAllister's no... READ MORE

Linda Burnett
This reviewer received a free of charge product for review.
A gripping read!
This book focuses on Simone, mum to Lucy and the lengths that she will go to when Lucy is kidnapped in Texas. The story starts off a little slow, but it so... READ MORE

Rachel Hasler
This reviewer received a free of charge product for review.
Hard to get into initially but then got carried along by the ride
I found this hard to get into initially but then got carried along by the ride, it was a good read although a tad farfetched at times but I enjoyed the rid... READ MORE

Coramcq
This reviewer received a free of charge product for review.
A nightmare situation
A parent's worst nightmare, your daughter is kidnapped in the early hours as you sleep. Added to this they are in a foreign country albeit America.
The ki... READ MORE

the moving finger writes
This reviewer received a free of charge product for review.
A must read!
Thank you to Netgalley and the publishers for the opportunity to read an ARC. I have read a lot of Gillian McAllister's books and, on the whole, really en... READ MORE

Julia Rice

Brilliant!
Holy moly. What a cleverly written book!The breadcrumbs through this book, that you dont even realise are breadcrumbs, turn into a whole meal. And thats wh... READ MORE

Sammy-Jo Brindley

A must read
Eighteen year old Lucy has spent the summer in Texas., and Simone can't wait to join her only child for a camping trip before Lucy goes back to the UK to j... READ MORE

Kate Harod-Wild
This reviewer received a free of charge product for review.
A twist I didn’t see coming
When Simone’s daughter is kidnapped from the holiday lodge they’re staying in for their mother-daughter bonding trip, her only focus is getting Lucy back s... READ MORE

Sue Southcott
This reviewer received a free of charge product for review.
Another amazing five-star read by GM
Another amazing five-star read by GM. A real page turner and a smooth and clever plot twist... I certainly didn't see it coming.
Every mother's nightmare,... READ MORE

Lisa Harrison
This reviewer received a free of charge product for review.
Another fantastic book from Gillian!
Another Gillian McAllister book that I really enjoyed! A thrilling story that shows a true bond between mother and daughter and how far one will go to prot... READ MORE

Aimee Summerfield
This reviewer received a free of charge product for review.
Dramatic storyline
The first book by Gillian McAllister I have read. Predominantly about a mother and daughter relationship in a dramatic storyline that maintains a tense pa... READ MORE

Richard Angrave

Engaging family drama
Thank you to NetGalley and Michael Joseph, Penguin Random House for this ARC.
Restaurateur Simone Seaborn, 43, has flown to Texas to reunite with her 18... READ MORE

Beate251
This reviewer received a free of charge product for review.
Fun thriller
It feels appropriate that I finished reading this on Mothering Sunday, because it is very much about the relationship between a mother and her child.Lucy S... READ MORE

Nicola Mackenzie-Smaller
This reviewer received a free of charge product for review.
Five stars!
Caller Unknown by Gillian McAllister is an electrifying and emotional thriller that explores the terrifying lengths a mother will go to in order to save he... READ MORE

The Secret Book Review

Fantastic
Huge fan of Gillian McAllister and reading the blurb I knew this was going to be another great thriller.
Simone is in Texas to visit her daughter Lucy, ... READ MORE

Kayleigh Bourton

Brilliant
A great author and another great book. This was a very unusual plot, part crime, part family love and part road trip.
It was very well thought out and re... READ MORE

S Bi

A Texan Adventure
When British woman Simone Seaborne flies out to Texas to join her teenage daughter, Lucy. who has been on a summer camp, the trip is meant to be a mother-d... READ MORE

Lorraine Douglas
This reviewer received a free of charge product for review.
A decent read if you look past the implausible bits
It took me a while to really engage with this one. I've read all of Gillian's books and enjoyed them all. I didn't think this was her best.
Simone and Luc... READ MORE

Michelle Nelder
This reviewer received a free of charge product for review.
A what would I do suspenseful read
Having read and thoroughly enjoyed Famous Last Words I was eager to read Gillian McAllister’s latest psychological thriller Caller Unknown.
The plot is ... READ MORE

Paul Bradley
This reviewer received a free of charge product for review.
brilliant
Oh my goodness I was so excited to read this and I was definitely not disappointed.Another great Gillian McAllister read this was full of tension and suspe... READ MORE

Lisa Hamer
This reviewer received a free of charge product for review.
A love letter to motherhood
Caller Unknown feels like a love letter to motherhood by one of my favourite authors. Simone’s unconditional love for her daughter is beautifully realised ... READ MORE

Hayley Remmington
This reviewer received a free of charge product for review.
Gripping
I’ve read all of Gillian McAllister’s books and Caller Unknown is definitely one of my favourites. As with all her writing, it’s so much more than just a t... READ MORE

Olga May

Family relationships
I didn’t find this one as nail biting and page turner as some of her previous books but it explores the relationship and bond between mother and daughter. ... READ MORE

Margaret Walker
This reviewer received a free of charge product for review.
A dark and twisty tale that was a clear five star read for me!
Caller Unknown explores every parent’s nightmare - after Simone’s young adult daughter Lucy is taken in the middle of the night, she is given the chance to... READ MORE

Kat M
This reviewer received a free of charge product for review.
fab!
Gillian’s books just get better and better. Gripping, full of twists and I love the pacing. Thank you for my e arc, I feel so lucky to have read another by... READ MORE

Megan Woolls
This reviewer received a free of charge product for review.
Slow Burn, Big Feelings
Caller Unknown is a slow burn thriller where a mother's love and the consequences of that are repeatedly weighed up against her morals. Simone repeatedly h... READ MORE

Gemma Kay
This reviewer received a free of charge product for review.
not my favourite
I wasn’t sure what to expect from this book as I’ve only read one other by this author and that had a weird time travelling element alongside the thriller ... READ MORE

Sakura Herrington
This reviewer received a free of charge product for review.
Absolutely Brilliant
I love how Gillian McAllister writes the most brilliant thriller books with incredible twists at the same time as beautiful love stories. Caller Unknown is... READ MORE

KK19
Verified Purchase
Brilliant book
This was riveting I couldn't put it down can't wait for her next book.

Maria Nugent
Verified Purchase
Caller Unknown
A brilliant novel by the superb Gillian McCallister.
How far would you go to protect your daughter?
While Simone is on holiday with her daughter, her ... READ MORE

Adrian Reaney
This reviewer received a free of charge product for review.Verified Purchase
Tense and fast paced!
Thank you to NetGalley and Michael Joseph for the ARC — this one had me STRESSED in the best way. It follows Simone, who flies to Texas to visit her daught... READ MORE

Janks
This reviewer received a free of charge product for review.
What would a mother do for her daughter?
Caller Unknown Gillian McAllister
3 stars
What lengths would you go to for your daughter?
Simone and Damien Seaborn are a happily married couple r... READ MORE

Karen Morgan
This reviewer received a free of charge product for review.
A gripping read from start to finish!
This book really had me gripped from the start. The set up is a mother (Simone) from London, visiting her 18 year-old daughter in Texas, where she’s been w... READ MORE

Allyce Pope
This reviewer received a free of charge product for review.
Tense and gripping thriller about a mother's love
As soon as I opened this, I was hooked. The tension in the first part??...I am pretty sure that I stopped breathing for quite large chunks. The plot is Gil... READ MORE

Rebecca Jenkins

Fast-paced thriller
I have read ‘wrong time wrong place’ by this author and really enjoyed it, so was excited to read this new one of hers. Thanks to NetGalley and Michael Jos... READ MORE

Jo Kerr
This reviewer received a free of charge product for review.
Another gripping thriller by Gillian McAllister
I've read quite a few or Gillian McAllister's previous books and I love the way she writes emotive suspense in her books.
This book follows mother and ... READ MORE

Leanne
This reviewer received a free of charge product for review.
I enjoyed this fast paced thriller and would rate it at 3.5 stars rounded up to 4.
Unknown Caller is the new thriller by Gillian McAllister where a mother questions just how far she will go when her child’s life hangs in the balance.
S... READ MORE

Gary Wilkes

thriller with a heart
Gripping from the first page, Caller Unknown is a masterclass in emotional suspense. Gillian McAllister takes a simple premise—a mother waking to find her ... READ MORE

Leanne H
This reviewer received a free of charge product for review.
Twisty
Loved this. Had me hooked from the first chapter. Woke up early needing to know what happened to the characters who were incredibly well written. I'd give ... READ MORE

Emma Andrews
Verified Purchase
Caller Unknown
⭐️ 4 ⭐️
Gillian McAllister is an auto-buy author for me, so I was excited to start Caller Unknown.
I was hooked by the premise, and although I thought th... READ MORE

Dee
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