Captain Holling is relieved of command due to a nervous breakdown, and Captain Downey takes over just as the liner is about to be used for an experiment in remote control. Professor Grimson has created a system to control the ship from land, but a rival group listens in and later attacks and kills the professor. Major Pope investigates the attack and joins the trip, where at least two passengers are revealed to be enemy agents.
Mystery Liner
A group of investigators embark on a perilous quest to unravel the mystery of a deadly crime that unfolds on a luxurious cruise ship, navigating treacherous waters of deception and betrayal to uncover the truth.
