A lowly BBC employee pulls a prank at the studio and finds himself transferred to an isolated island where he is to set up a weather station at a lighthouse. As if in a fantasy, a ship carrying a bevy of beautiful models is shipwrecked off the coast and the models wind up on the island. However, when the models begin disappearing, the "back-room boy" investigates and finds a sinister scheme involving spies and Nazi battleships.

Louis Mazzini's mother belongs to the aristocratic family D'Ascoyne, but she ran away with an opera singer. Therefore, she and Louis were rejected by the D'Ascoynes. Once adult, Louis decides to avenges his mother and him, by becoming the next Duke of the family. Murdering every potential successor is clearly the safest way to achieve his goal...