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