During a holiday by the British seaside, Hornleigh and Bingham grow bored and turn their hand to investigating a local crime.

The legendary Bela Lugosi as "the Vampire" teams up with Britain's much-loved "Mother Riley" in this hilarious comedy adventure. The Vampire plans to control the world with the help of his robot, which accidentally gets shipped to Mother Riley. Through radar control, he contacts the robot and orders it to come to him, bringing along Mother Riley! But his life is turned upside down when he holds this most meddling of mothers captive.

A serial killer is murdering women in the Whitechapel district of London. An American policeman is brought in to help Scotland Yard solve the case.

A rocket engineer, responsible for sending a satellite into space, is accused of committing the most extraordinary crime.