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
Jack Long
Stunts
Ned Winchester
Stunt Double
Chuck Colean
Stand In
Allen G. Siegler
Cinematography
Directing

D. Ross Lederman
Director
Editing
Otto Meyer
Editor