Sam Maddox, a troubled girl whose father committed suicide, has earned a reputation at her high school for being a bit promiscuous. When Sam begins seeing brilliant, MIT-bound Henry Sinclair, the two opposites really attract. Although Sam doesn't realize it, Henry is in the grip of an insane romantic obsession, and he will kill anyone who tries to put an end to his star-crossed - and increasingly deadly - romance.

Four friends lose themselves in a carefree South-East Asian holiday. Only three come back. Dave and Alice return home to their young family desperate for answers about Jeremy's mysterious disappearance. When Alice's sister Steph returns not long after, a nasty secret is revealed about the night her boyfriend went missing. But it is only the first of many. Who amongst them knows what happened on that fateful night when they were dancing under a full moon in Cambodia?