Sherlock Holmes is drawn into the case of Jack the Ripper, who is killing prostitutes in London's East End. Assisted by Dr. Watson, and using information provided by a renowned psychic, Robert Lees, Holmes finds that the murders may have their roots in a Royal indiscretion and that a cover-up is being managed by politicians at the highest level, all of whom happen to be Masons.

The Theatre of Death in Paris specialises in horror presentations. A police surgeon finds himself becoming involved in the place through his attraction to one of the performers. When bloodless bodies start showing up all over town he realises there could be links with the theatre.

Evil lurks in the gloomy house at Markham Manor where a deranged Sir Edward is the chained prisoner of his brother Julian. When Sir Edward escapes, he embarks on a monstrous killing spree, determined to seek revenge on all those whom he feels have double-crossed him.

Harry and Emily are two of the livelier residents of a London old people's home. When they decide to get married, things prove less simple.

Rough, tough and politically incorrect in the way that only the best 70's dramas can be, Regan was a pilot film for The Sweeney - one of the major television successes of the last fifty years. Featuring John Thaw as the irascible Detective Inspector Regan and Dennis Waterman as his loyal 'oppo' Detective Sergeant Carter, Regan was an immediate critical and ratings hit, resulting in four series of The Sweeney and two successful feature films. Jack Regan is a good copper, but his tough, intuitive style is becoming unfashionable in a Scotland Yard seeking a new image. When a policeman is mysteriously murdered, Regan breaks all the rules to find the killer - but he finds there are men in the Flying Squad prepared to break him.