An Australian woman arrives in London to search for her sister who she finds is involved with a heroin smuggling gang. The gang itself is under attack from an unknown…

The son of a British racehorse owner conspires with a bookie to ruin the odds of his father’s thoroughbred winning an important event.

A group of hooded vigilantes hang wrong-doers with a rope stolen from Scotland Yard’s Black Museum.

A strangler is loose on a British estate, and he not only strangles his victims but brands an “M” onto their foreheads before he decapitates them.

An old man living in an oriental city tells the story of his life to a group of kids: He too was once a young boy by the name of…