When her brother is killed by sabotage, Irene Eaton (Sally Eilers) joins the secret service and goes undercover to unroot the culprits.
Irene Eaton a.k.a. Margaret Brennan
George Wolf / James Huntley
Dr. Krull
Col. John Shaw
Col. Marvin Page
Senator Everett Brock
Ben Dawson
Colonel Wilson
Gillian
Lucius Wilkins