"Five years ago, Cass barely survived a brutal attack that left her family dead. Now a scuba diving instructor in Thailand, she has spent years trying to build a new, anonymous life for herself as one of the Permanents, a group of expats who have claimed the beautiful Thailand destination as their own. The permanents are charming, they're close-knit, and they don't linger on who they were before the island--they're the perfect group for Cass to finally...

When a dive off the coast of Alabama goes horribly wrong, twelve-year-old Julie and one of her father's scuba clients struggle to survive after reaching an abandoned oil rig.