The Message of the Mouse 1917

Directed by J. Stuart Blackton

A wealthy financier is tricked by a pair of spies into giving millions to foreign powers. His daughter is suspicious and hires a Detective, who is able to foil the foreign agent's plans. Meanwhile, the daughter has fallen in love with a fellow from the enemy camp, but all ends well as his true identity is revealed as a member of the U.S. secret service.