The Secret Witness

Lois Martin

Capt. McGowan

Bella

Jeff - Building Janitor

Officer Brannigan

Lewis Leroy

Arthur Jones aka Casey

Gunner - Bodyguard

Sylvia Folsom

Herbert 'Bert' Folsom

Detective

Mike - Speakeasy Proprietor

Tess Jones

Larson - Building Engineer

Gunner's Woman Friend

Police Commissioner Martin

Contact Detective

Radio Announcer's Voice