The Lost House is a lost 1915 American short drama film directed by Christy Cabanne and starring Lillian Gish.

Plot

According to a film magazine, "Dosia Dale, a young Kentucky heiress and her uncle's ward, arrives in a hotel heavily veiled, and apparently ill. She is under subjection to her uncle who calls in Dr. Protheroe, crook and charlatan. The uncle has spent Dosia's fortune. As the time for turning it over approaches he proposes marriage to save himself. She refuses indignantly. Balked, he schemes with Protheroe to do away with her. Protheroe's house is in a street devoted to insane asylums. There Dosia is locked in an upper room. She manages to slip a note through the window bars, but as that is a trick of the insane the police pay no attention. Ford, a reporter, sees the note, learns Dosia Dale, an heiress, soon to come of age, has been traveling with her uncle, and investigates.