Stevie Erickson is looking for a fresh start. The sudden loss of her grandmother has sent her life into a tailspin, dredging up old losses and putting a strain on her relationship with her boyfriend, Jacob. So when Jacob is offered a job as a diver for GoEco, a dive operation for ecotourists on Rafiki, a beautiful, secluded island off the coast of Tanzania, he thinks it’s just the adventure they need and Stevie reluctantly agrees to go with him. Their trip gets off to a rough start with a nighttime scare at their first hostel. Already fragile, Stevie can’t shake the feeling that she’s being watched. Things improve when they meet seasoned backpackers Leo and Tamsin, a drop-dead gorgeous couple who instantly take a shine to Stevie and Jacob. But on Rafiki Island, their new friendship is put to the test, as is Stevie and Jacob’s own relationship. And when innocent flirting goes too far, past truths surface, exposing a killer in their midst—a killer whose sights are set on Stevie.