Jonathan Jones, a professor of ancient languages, comes into possession of an ancient coin. He translates its inscription, which gives him three powers: to inflict pain, slow down time or kill. Soon, he's pursued by enemy spies who have learned about the magic coin.

While attending a Swiss school for diplomats' daughters, the teenage daughter of the American ambassador uses her access to various embassies to engage in espionage.

A 12-year-old orphan who has just inherited a fortune is trapped on an island with his uncle, a former British intelligence commander who intends to kill him. A young girl is the boy's only ally against the sarcastic uncle, who uses hypnotism, a pool of sharks, fire, and poisonous mushrooms as weapons.

An American car salesman in London becomes mixed up in a series of fatal occurrences at a secluded mansion.

Ben (Sid Caesar) and Kate Powell (Vera Miles) rent a haunted New England house by the sea where their son Steve (Barry Gordon) cops the blame for mayhem caused by the pranks of three mischievous ghosts.

The reclusive Dr. Zorba has died and left his sprawling mansion to his nephew Cyrus and his family. They will need to search the house to find the doctor's fortune, but along with the property itself, they have also inherited the occultist's collection of thirteen ghosts.