Open Ocean, Closed Coffin

When Zayn Stone, a budding author having some success with his work, is invited by his two closest friends, married swingers Donna and Chris, to take a trip to Hawaii as a plus one on the superyacht of the millionaire number two in a very successful Chinese robotics corporation, he thinks it will be an interesting experience. He has no idea.

Both Chris and Donna have designs on him, and then there's a murder in a locked cabin and a host of suspects. There's the spoiled actress, the MVP basketball player, the reclusive supermodel, the two power-lifting German crew members, and others. Can he even survive the trip, let alone figure out whodunit? The answer will surprise you.