Ralph Bellamy
Insp. Steve Trent
Gail Patrick
Helen Stanley
Bradley Page
George T. Noel
Vincent Sherman
Karl Williams
Phillip Trent
Larry King (as Clifford Jones)
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)
