Three friends (Darcie, Camilla, and Kate) are off to the Maldives to celebrate Darcie's divorce. These three women came together in their joint grief. All three suffered an unbearable loss twenty years ago when a man went on a murdering spree at a guesthouse, killing 6 people. Camilla lost a brother, Darcie lost a boyfriend, and Kate was the only survivor from that night, but she lost her old life. The three of them aren't happy about the investigation, wanting it reopened, believing the killer did not act alone. And someone is determined not to let that happen.

This was such a brilliant read. From the first chapter, it was just so good. The story jumps between a few different characters. It also jumps between past events that have happened and the present day. There were plenty of twists that keep you guessing, I certainly wasn't expecting it to go in the direction it did. 
I'd say this is a must, for any thriller lovers looking for a summer read this year.