One of the sons of late Dr. Henry Frankenstein finds his father's ghoulish creation in a coma and revives him, only to find out the monster is controlled by Ygor who is bent on revenge.

Sherlock Holmes investigates a series of so-called "pajama suicides". He knows the female villain behind them is as cunning as Moriarty and as venomous as a spider.

Clips from assorted television programs, B-movies, commercials, music performances, newsreels, bloopers, satirical short films and promotional and government films of the 1950s and 1960s are intercut together to tell a single story of various creatures and societal ills attacking American cities.

Robin Hood fights nobly for justice against the evil Sir Guy of Gisbourne while striving to win the hand of the beautiful Maid Marian.

Holmes and Watson board a passenger train bound from London to Edinburgh, to guard the Star of Rhodesia, an enormous diamond worth a fortune belonging to an elderly woman of wealth; but within the first hour of the trip, the woman's son is murdered and the diamond stolen and any of the passengers in their car could be the killer thief.

A convicted thief in Dartmoor prison hides the location of the stolen Bank of England printing plates inside three music boxes. When the innocent purchasers of the boxes start to be murdered, Holmes and Watson investigate.

Three convicts escape from prison on Devil's Island just before Christmas and arrive at a nearby French colonial town. They go to the store of the Ducotels, the only store that gives supplies on credit. They initially intend to take advantage of them but have a change of heart after they find the family is in financial troubles.

A hapless carnival performer masquerades as the court jester as part of a plot against a usurper who has overthrown the rightful king of England.

In 1820 Spain, the son of a California nobleman comes home to find his native land under a villainous dictatorship. On one hand, he plays the useless fop, while on the other, he is the masked avenger Zorro.

Two newlyweds spy on the Nazis for the British Secret Service during their honeymoon in Europe.