Aerial dancer La Syrena, whose jealous husband kills her while she performs in midair. Her daughter, Jennie Raeburn, soon orphaned, grows up unaware of her mother's occupation, but nonetheless feels the urge to dance.

Melodrama in which the rich arrogant George gives money to poor Frank and Jane, so he may spend a night with Jane. Jane goes along with it because she need the money to save her sick husband.

A poor but brilliant inventor sets out to make his fortune by discovering buried treasure, with the aid of a special inverted periscope through which he can view the ocean floor.

A hunchback, sworn to revenge against a woman who rejected him, lures her stepdaughter Elaine to the stage and assists her to become a dancer. Her stepmother goes to see her dance where the hunchback murders her goes mad and falls off a cliff to his death. John Butler, who is loved by Elaine, is accused of killing him, but Elaine clears him of the charge by proving the hunchback was the murderer of her stepmother.

As described in a film magazine, determined that her son Francesco (Verdi) will have every advantage of a successful reign when he grows to manhood, Duchess Gismonda refuses all offers of marriage. A sudden danger to her son prompts her to offer her kingdom to the man who rescues the child. Almerio (Foote) braves the dangers of the lion's den to save the child, but because he is a slave the Duchess refuses to fulfill her vow. Gradually, she learns to love him, and after he assumes the guilt for a murder that she committed, Gismonda confesses to the crime and in the presence of her people makes Almerio her consort.

Inez Valenti is the niece of Grant Thorne, who runs a gambling house. She acts as a lure for her uncle's den. Barry King becomes infatuated with her, and this gives her a violent aversion to the life she has been living "behind closed doors."