Discover
Ralph Bellamy
Insp. Steve Trent
Shirley Grey
Betty Lane
Gail Patrick
Helen Stanley
Kane Richmond
Lee Davis
Bradley Page
George T. Noel
Vincent Sherman
Karl Williams
Phillip Trent
Larry King (as Clifford Jones)
Arthur Rankin
Jimmy
Lucien Prival
Gibson
Ward Bond
Jack Baker
Helen Eby-Rock
Jessie Allen
Frank O'Connor
Ballistic Expert
Charles Brinley
Electrician (uncredited)
A.S. Byron
Detective #3 (uncredited)
Stephen Chase
Wallach (uncredited)
Jack Cheatham
Motorcycle Officer (uncredited)
Edmund Cobb
Electrician (uncredited)
Kernan Cripps
Gateman (uncredited)
Budd Fine
Guard #1 (uncredited)
Pat Harmon
Electrician (uncredited)
A.R. Haysel
Detective #2 (uncredited)
William Humphrey
Doctor (uncredited)
Edward Keane
Mr. Richardson - Studio Manager (uncredited)
Sam Lufkin
Motorcycle Officer (uncredited)
Buck Mack
Electrician (uncredited)
Frank Mills
Property Man (uncredited)
Bruce Mitchell
Guard #2 (uncredited)
Earl Pingree
Detective #1 (uncredited)
Hal Price
Reilly (uncredited)
Ky Robinson
Jennings (uncredited)
Dick Rush
Detective #4 (uncredited)
Lee Shumway
Radio Announcer (uncredited)
Cap Somers
Electrician (uncredited)
Ned Winchester
Double (uncredited)
Crew
Allen G. Siegler
Cinematography
Jack Long
Stunts
Ned Winchester
Stunt Double
Chuck Colean
Stand In
Directing
D. Ross Lederman
Director
Editing
Otto Meyer
Editor
