I'm catching up on reading and reviewing the back catalogue of Kiersten's thrillers. This is yet another book which I read in just one sitting, as I had to keep page turning to discover what, why and who! Five strangers think they are going on a yacht for free party food and drink, only to be abandoned on a deserted island with no explanation. When they find a chilling note saying only one of them can leave, they all start to wonder who can be trusted. Are they alone on the island? Will they all survive and escape back to their normal lives or is this where they will take their final breath? Interesting and believable mix of characters. The usual plot twists and jaw dropping moments I have come to expect from Kiersten. Written in chapters mainly from the point of view of the main character (you actually don't discover her name until well over half way through).