"The law is helpless! G-Men are Baffled!"
A doctor working with the Bureau of Pure Foods and Drugs, uses radio broadcasts to expose fraudulent patent medicines.
Robert Livingston
Dr. Lawrence Baxter
Grace Bradley
Jean Sterling
Willard Robertson
Inspector 'Mac' McDonald
Pierre Watkin
Kennedy
Smiley Burnette
Jimmy
Granville Bates
Prof. Rexford Sterling
William Newell
Andrews
Byron Foulger
Pete Andorka
Wilbur Mack
F. J. Thompson
Matty Fain
Burke
