Antonio Riccardi, a rare stamp dealer who is secretly a hired killer, pays for the violin lessons of his gifted brother Giuseppe. To meet the expenses of Giuseppe's concert debut he accepts a further job, but his decision to do so provides Detective Inspector Carson, who has long hoped to ensnare Tony, with an opportunity that might now enable him to bring about his downfall.

An absent minded professor invents a pen that will explode on the sound of bells, then leaves it in a taxi

Picking a pocket leads to blackmail and murder for a petty criminal in London.

Private eye Slim Callaghan is summoned to the country home of a Colonel Stenhurst, but the latter is murdered before he can talk to the detective. Was one of the Colonel's three daughters responsible?

Chaos ensues when a bunch of misfits man a British searchlight battery during World War II.

A physician is forced to operate on a mystery figure under shady circumstances.

In this crime drama, an escaped convict is recaptured and charged with killing two people in a lonely waystation during a snowstorm. Fortunately, a novelist is around to prove him innocent.

Norman Truscott is a store worker who dreams of stardom. Vernon Carew is a singer whose star is fading. Vernon manages to get a recording of Norman singing and passes it off as himself.

A team of astronauts lands on a moon of Jupiter to find it populated with beautiful young women looking for mates. An old man explains to the explorers the group's story, as well as the moon's dangers.