A perfect holidayPerfect strangersThe perfect murderThree couples meet around the pool on their Florida holiday and become fast friends. But on their last night, the teenage daughter of another holidaymaker goes missing, and her body is later found floating in the mangroves.When the shocked couples return home, they remain in contact, an over the course of three increasingly fraught dinner parties they come to know one other better. But they don't always like what they find...Then another girl goes missing.Could it be that one of these six has a secret far darker than anybody can imagine?