Insurance agent-physician collects on policies of men murdered by a disfigured resident of the home for the blind where he acts as doctor-on-call.

Current and former New Scotland Yard detectives open their case files to tell the inside story of how they caught some of London's most notorious killers. Presented by Peter Bleksley.

A killer called 'The Dark Man' commits double murder. This is witnessed by the young aspiring actress Molly Lester. The Dark Man tries everything to put Molly out of the way. Detective Inspector Viner of Scotland Yard investigates the murders.

A young heiress finds evidence suggesting that at night she acts under the influence of a family curse and has begun committing ghastly murders in a nearby park.

When Professor Willingdon becomes wary of the nuclear weapons he is helping build, he steals a warhead and threatens to detonate it in London in seven days unless the government begins nuclear disarmament. As Willingdon goes into hiding, Detective Folland of Scotland Yard sets out to find him. Willingdon's daughter Ann also joins the cause, hoping she can talk sense into her father before he causes a catastrophe.

The police and British security forces call in Professor Van Helsing to help them investigate Satanic ritual which has been occurring in a large country house, and which has been attended by a government minister, an eminent scientist and secret service chief. The owner of the house is a mysterious property tycoon who is found to be behind a sinister plot involving a deadly plague. It is in fact Dracula who, sick of his interminable existence, has decided that he must end it all in the only poss

It's just days before Christmas in London, but not everyone is full of good cheer - as a maniac with a pathological hatred of Santa Claus stalks the streets, butchering any man that’s unlucky enough to be wandering around dressed as Old Saint Nick.

A security leak is found at a Southern California atomic plant. The authorities stand in fear that the information leaked would go to a hostile nation. To investigate the case more efficiently, Dan O'Hara, an FBI agent, and Philip Grayson, a Scotland Yard sleuth, join forces. Will they manage to stop the spy ring from achieving their aim?

In this murder mystery, a woman's brother is killed in a freak accident, or so she believes. Fortunately for her, an American journalist is more suspicious and so begins roaming the London streets in search of the killer.

The owner of a coal mining operation, falsely imprisoned for fratricide, takes a drug to make him invisible, despite its side effect: gradual madness.

A Scotland Yard investigator looks into four mysterious cases involving an unoccupied house.

U.S. Secret Service agent Peter Novak goes undercover with Scotland Yard officer Thompson to halt a murderous gang of counterfeiters known as the Golden Goose. Although Peter is unsure about John's loyalties, the two infiltrate the gang and win the trust of thug Nick "The Owl" Harrison before enduring a series of double-crosses.