The Lion's Den by Katherine St John

Sex, betrayal, and intrigue: A dream vacation on a luxurious yacht turns deadly in this pulse-pounding beach read "chock full of delicious characters who flaunt their sins . . . like the latest Birkin bag" (Adriana Trigiani).

Belle likes to think herself immune to the dizzying effects of fabulous wealth. But when her best friend, Summer, invites her on a glamorous getaway to the Mediterranean aboard her billionaire boyfriend's yacht, the only sensible answer is yes. Belle hopes the trip will be a much-needed break from her stalled acting career and uniquely humiliating waitressing job, but once she's aboard the luxurious Lion's Den, it soon becomes clear this jet-setting holiday is not as advertised.
Belle's dream vacation quickly devolves into a nightmare as she and the handful of other girls Summer invited are treated more like prisoners than guests by their controlling host-and in one terrifying moment, Belle comes to see Summer for...