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)