A pair of bus drivers accidentally steal their own bus. With the company issuing a warrant for their arrest, they tag along with a playboy on a boat trip that finds them on a tropical island, where a jewel thief has sinister plans for them.

Sir Karell Borotyn appears to have been killed by Count Mora, a vampire who prowled around his castle. One year later, Irena, Karell’s daughter, is haunted by the vampire and will be his next victim… unless Professor Zelen can avoid it.

Dr. Peter Blood, unjustly convicted of treason and exiled from England, becomes a notorious pirate.

On his uncle’s death Sir Henry Baskerville returns from abroad and opens up the ancestral hall on the desolate moors of Devonshire. Holmes uncovers a plot to have Sir Henry murdered by a terrible trained hound. First casting of Rathbone and Bruce as Holmes and Watson.

A scientist working on cures for rare afflictions, such as a bone softening agent made from molds to allow him to correct the spinal deformity of his nurse, finds the physical causes of lycanthropy in wolf-man Larry Talbot and of vampirism in Count Dracula, but himself becomes afflicted with homicidal madness while exchanging blood with Dracula.

Graverobbers open the grave of the Wolfman and awake him. He doesn’t like the idea of being immortal and killing people when the moon is full, so he tries to find Dr. Frankenstein, in the hopes that the Dr. can cure him, but Frankenstein is dead and only his Monster is alive and this one wants to live, not to die like the Wolfman.

A crazed zoologist uses zoo animals to dispose of his wife’s suitors.

In the carnival in Spain in the beginning of the Twentieth Century, the exiled republican Antonio Galvan comes from Paris masquerade to enjoy the party and visit his friend Capt. Don Pasqual ‘Pasqualito’ Costelar. However, he flirts with the mysterious Concha Perez and they schedule to meet each other later. When Antonio meets Pasqualito, his old friend discloses his frustrated relationship with the promiscuous Concha and her greedy mother and how his life was ruined by his obsession for the beautiful demimondaine. Pasqualito makes Antonio promise that he would not see Concha. However, when Antonio meets Concha, she seduces him and the long friendship between Antonio and Pasqualito is disrupted

During the Nazi occupation of Poland, an acting troupe becomes embroiled in a Polish soldier’s efforts to track down a German spy.