Loner Mark Lewis works at a film studio during the day and, at night, takes racy photographs of women. Also he's making a documentary on fear, which involves recording the reactions of victims as he murders them. He befriends Helen, the daughter of the family living in the apartment below his, and he tells her vaguely about the movie he is making.
The S. S. Claridon is scheduled for her five last voyages after thirty-eight years of service. After an explosion in the boiler room, Captain Robert Adams is reluctant to evacuate the steamship. While the crew fights to hold a bulkhead between the flooded boiler room and the engine room and avoid the sinking of the vessel, the passenger Cliff Henderson struggles against time trying to save his beloved wife Laurie Henderson, who is trapped under a steel beam in her cabin, with the support of the crew member Hank Lawson.
Jim Wormold is an expatriate Englishman living in pre-revolutionary Havana with his teenage daughter Milly. He owns a vacuum cleaner shop but isn’t very successful so he accepts an offer from Hawthorne of the British Secret Service to recruit a network of agents in Cuba.
Dr. Génessier is riddled with guilt after an accident that he caused disfigures the face of his daughter, the once beautiful Christiane, who outsiders believe is dead. Dr. Génessier, along with accomplice and laboratory assistant Louise, kidnaps young women and brings them to the Génessier mansion. After rendering his victims unconscious, Dr. Génessier removes their faces and attempts to graft them on to Christiane's.
The only son of wealthy widow Violet Venable dies while on vacation with his cousin Catherine. What the girl saw was so horrible that she went insane; now Mrs. Venable wants Catherine lobotomized to cover up the truth.
A disgraced merchant marine officer elects to stay aboard his sinking cargo ship in order to prove the vessel was deliberately scuttled and, as a result, vindicate his good name.
Two Scotland Yard detectives investigate the murder of a young woman of mixed race who had been passing for white. As they interview a spate of suspects -- including the girl's white boyfriend and his disapproving parents -- the detectives wade through a stubbornly entrenched sludge of racism and bigotry.
A California commercial pilot sees a telecast in London of an interview with Sir Mark Lodden at his home. The Canadian is convinced that the baronet is a fraud, and he is actually a look-alike actor named Frank Welney.
Mystery writer Cornelia Van Gorder has rented a country house called "The Oaks", which not long ago was the scene of some murders committed by a strange and violent criminal known as "The Bat". Meanwhile, the house's owner, bank president John Fleming, has recently embezzled one million dollars in securities and has hidden the proceeds in the house, but is killed before he can retrieve it.