Rush of blood

Three couples meet around the pool of their Florida holiday home and become fast friends. But on their last night, their perfect holiday takes a tragic twist: the teenage daughter of another holidaymaker goes missing, and her body is later found floating in the mangroves. Then, a second girl goes missing. Could it be that one of these six has a secret far darker than anybody can imagine? A brilliantly plotted, utterly gripping thriller about the danger of making friends on holiday.