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
Swain
Kellogg
Announcer
Golden
Nurse (uncredited)
Director
Screenplay
Story
