Dr. John Watson treats a patient who has lost a thumb. The patient says that the loss of his thumb was not an accident but the result of an attack. However, he fears that the story behind the loss of his digit is so strange that the police will not believe it.

A widow's son refuses to be adopted by a Lord when he learns the Lord is her father.

Mormons capture women for their wives in this silent anti-Mormon propaganda film featuring the original organ music.

A decadent tale of drugs and the London underworld the cosseted daughter of a respectable businessman - in fact head of a cocaine racket - succumbs to the pleasures of drink and drugs. Vivid nightlife scenes recreate the interwar world of flappers and hedonists; the dapper club owner and seedy street dealers.

Richard Thorn, a wealthy young man who returns from Africa after his father's death to manage the family estate. While at the train station, he hires a taxi driven by Davis, a disgruntled man who envies Thorn's wealth and lifestyle. The story explores the contrast between the wealthy Thorn and the resentful Davis.

Captain Frank Marvin and Lieut. Bob Chase are army draftsmen in the Ordnance Department. Marvin is working on plans for a submarine that is expected to revolutionize warfare. One of the foreign governments is anxious to obtain the plans.