Alive Blocks German Duplicity

During World War I, John Stevens invents an anti-submarine device, but the plans are stolen by two German spies, the Baron von Wiederholtz and Madame Elsa, who flee to a New York hotel. Stevens' daughter Alice pursues the spies hoping to retrieve the plans.

---

Main Cast: Winifred Allen, Earle Foxe, Forrest Robinson, Robert Fischer, Margaret Greene, Clarence Handyside, Charles Wells, Madeline Marshall, Amy Somers, Riley Hatch

Director: Albert Parker

Writer: Arthur Stringer

Editor:

Cinematographer:

---

Popular Double Features