How much can you trust your friends.... The text message is just 3 words: I need you. Isa Leigh drops everything, packs up her baby daughter and heads straight to Salten where she and her 3 best friends attended prestigious boarding school, Salten House. Only Kate still lives in the area, at the crumbling Tide Mill she inherited when her disgraced art tutor father vanished when she was just 17. Each of the women is running from something, from an act that has haunted them for many years but which they have tried their best to bury: in work, in alcohol, in family, faith and routine. At school together, the girls used to play a game - the lying game - in which they competed to tell the most outrageous stories to fool tourists. But for some, did the boundaries between fact and fantasy become too blurred? ....and how much can you trust one another?