A doctor working with the Bureau of Pure Foods and Drugs, uses radio broadcasts to expose fraudulent patent medicines.
Dr. Lawrence Baxter
Jean Sterling
Inspector 'Mac' McDonald
Kennedy
Jimmy
Prof. Rexford Sterling
Andrews
Pete Andorka
F. J. Thompson
Burke
Nurse Nelson
Announcer
Nurse (uncredited)
Henchman (uncredited)
Druggist (uncredited)
Henchman (uncredited)
Nightclub Waiter (uncredited)
Radio Announcer (uncredited)
Director
Screenplay