A British submarine on patrol is accidentally rammed by a merchant ship, that tears a big hole in in sub which sinks trapping the crew.

A frightened woman is murdered in the London apartment of a well-known novelist named Henry Leroux. The police arrest Leroux's butler, but he escapes and runs off to a mysterious opium den, the lair of a drug dealer named Mister King. Gaston Max, a detective from Paris, arrives in London to investigate the drug trafficking. Although the police take down the gang, Mr. King escapes and manages to keep his true identity a secret.

'Poisoner's victim turns tables.' (British Film Catalogue)

'France, 1918. Armistice saves girl and pilot from death, but not Canadian agent.' (British Film Catalogue)

'Girl reporter and insane fiancé join pirate's descendant in treasure hunt.' (British Film Catalogue)

A French-Canadian trapper's adventures...

'1765. Judge sentences highwayman to die, then finds he is his son.' (British Film Catalogue)

In the Jacobite Rising of 1745, the Young Pretender Bonnie Prince Charlie leads an insurrection to overthrow the Protestant House of Hanover and restore his family, the Catholic branch of the House of Stuart, to the British throne.

In India an engineer blackmails a girl over her gambling brother.

'Cornwall. Detective poses as escaped convict to catch smugglers.' (British Film Catalogue)