Welcome to paradise. We hope you survive your stay. There are three rules to follow during a vacation at the famous Koh Sang resort. 1. Leave the past behind. When Cass sets foot on the coast of Thailand's world-famous party island, she's searching for an escape. With dark secrets following her every move, Koh Sang becomes the perfect place to hide. 2. Always be careful who you trust. Now, years later, Cass is a local dive instructor alongside the Permanents, a group of expats who have claimed the island as their own. The Permanents don't linger on who they were before the island. Simply because, like Cass, they all have something to outrun. 3. If someone discovers who you really are, run. But suddenly, a dive student is found dead and paradise comes crashing down. Because this isn't the first mysterious death on the island, and it won't be the last. Someone knows who Cass is, and they're ready to make sure justice is finally served.