U.S. government agents Lee Graham and Johnny Davis, along with Ann Carter, work to stop German spies from infiltrating a California war-defense plant by tapping phones. Lee creates a clever word-scrambler device that ultimately leads to the capture of the spies.
Underground Agent
U.S. government agents Lee Graham and Johnny Davis, assisted by Ann Carter, are tasked with thwarting a Nazi spy plot to tap into California's war-defense communication systems.
