For fans of B. A. Paris and Mary Kubica comes a propulsive, twisting psychological thriller that asks, How can you save someone else if you can't save yourself? After years of learning how to manage her bipolar disorder, Emily Firestone finally has it under control. Even better, her life is coming together: she's got a great job, her own place, and a boyfriend, Paolo, who adores her. So when Paolo suggests a weekend sailing trip,...