Lost Caverns Hotel bellhop Freddie Phillips is suspected of murder. Swami Talpur tries to hypnotize Freddie into confessing, but Freddie is too stupid for the plot to work. Inspector Wellman uses Freddie to get the killer (and it isn't the Swami).
Sherlock Holmes investigates when young women around London turn up murdered, each with a finger severed. Scotland Yard suspects a madman, but Holmes believes the killings to be part of a diabolical plot.
While under a hypnotic spell, Alfalfa thinks he's one of the Three Musketeers and challenges Butch to a duel.
After Slip is drafted into the Marines, the rest of the gang volunteers so they can be with him. Sach discovers that the colonel knew his father and he is promoted. During a drill that he is putting the rest of the gang through, they find a soldier left for dead on the side of the road. Slip discovers a playing card next to the marine and traces it to Jolly Joe Johnson's gambling house. They suspect that the gambling house is cheating and set out to uncover the proof.
After a meteorite unleashes a three-headed beast upon Tokyo, Mothra tries to unite with Godzilla and Rodan to battle the extraterrestrial threat.
American professor John Holden arrives in London for a conference on parapsychology only to discover that the colleague he was supposed to meet was killed in a freak accident the day before. It turns out that the deceased had been investigating a cult lead by Dr. Julian Karswell. Though a skeptic, Holden is suspicious of the devil-worshiping Karswell. Following a trail of mysterious manuscripts, Holden enters a world that makes him question his faith in science.
While vacationing in St. Moritz, a British couple receive a clue to an imminent assassination attempt, only to learn that their daughter has been kidnapped to keep them quiet.
Suzuki Shizuka is an office lady at a conglomerate who is hypnotized at a local amusement park and left under the spell. Now she is compelled to sing and dance whenever she hears any melody whatsoever. She heads back to the hypnotist for relief, but he is nowhere to be found. So Shizuka sets off on a journey around Japan to find him and break the spell.
Concerned about his friend's cocaine use, Dr. Watson tricks Sherlock Holmes into travelling to Vienna, where Holmes enters the care of Sigmund Freud. Freud attempts to solve the mysteries of Holmes' subconscious, while Holmes devotes himself to solving a mystery involving the kidnapping of Lola Deveraux.
Dr. Tony Flagg's friend Steven has problems in the relationship with his fiancée Amanda, so he persuades her to visit Tony. After some minor misunderstandings, she falls in love with him. When he tries to use hypnosis to strengthen her feelings for Steven, things get complicated.
A playwright descended from the Borgia family becomes a murder suspect.
A detective starts spiraling out of control when a wave of gruesome murders with seemingly similar bizarre circumstances is sweeping Tokyo.
The Bowery Boys find a lamp that has strange magic powers.
A violent gang enlists the help of a hypnotherapist in an attempt to locate a painting which somehow vanished in the middle of a heist.
In a tribute to the Fleischer brothers shorts of the '20s, a janitor hypnotizes Max Fleischer's pen to draw Betty Boop.
Slip invites his cousin Jimmy to stay with his family after he is released from prison. However, Jimmy soon gets mixed up with an auto-theft ring.
The Bowery Boys take on British crooks when one of them thinks he's inherited a title.
A ghost helps the Bowery Boys capture a gang of crooks led by a mad doctor.
The Bowery Boys--Slip, Sach, Bobby, Whitey & Chuck--start their own exterminating service, and get a job which takes them to a spooky old abandoned mansion in the middle of the night. Meeting up with pal Gabe and his new French bride, the boys are tormented by mad scientists who try to convince them the place is haunted and then kidnap Sach in order to place his brain inside a gorilla.
A tabloid writer has evidence of the assassination of a US Senator. A visit from a scrupulous FBI agent suggests he may know more than he's admitting about the assassination and the key may reside in the recesses of the writer's dark past.