The Butterfly(1915)

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.