More determined than ever to focus on their hard-earned relationship, Vincent and Catherine attempt to celebrate their marriage with a romantic getaway, far from the city and the stresses of work, family, and anything else that could keep them apart. No cell phones, no guns, no beasting out-just each other. But when their tranquil cruise ship is transformed into a crime scene, there's no escape, and Cat and Vincent are submerged in chaos. Can they bring down the threat before it brings down the ship?