After arriving unexpectedly at his country home, Dan Maitland discovers a young woman attempting to open his safe. She mistakes him for Anisty, a notorious thief who is Dan's double, and he gives her the jewels from the safe. Anisty appears, and there follow confusion and thrilling episodes in which Anisty is captured, escapes, and poses as Dan. Dan finally brings Anisty to justice and declares his love for Sylvia, who confesses she was searching Dan's safe to recover papers that might incriminate her father.