Douglas Kennedy
— Cliff Roberts, aka Jack Granger
Emory Parnell
— Capt. Duncan
William Phillips
— Roy Snead
Don C. Harvey
— Lead Guard Langley
Harry Cheshire
— Editor Daniel "Pop" O'Donnell
Marjorie Lord
— Rita McKelvey
Thurston Hall
— John McKelvey, news publisher
Billy Lechner
— Eddie Jones, convict with sore foot
Larry Steers
— Committee Chairman
Herbert Rawlinson
— Senator Holden
George Eldredge
— Guard Adams
Rusty Wescoatt
— Guard Yates
William Tannen
— Harry Cleaver
Rick Vallin
— Mr. Dennison
Frank Wilcox
— Lloyd Killgallen (uncredited)
Dorothy Vaughan
— Mrs. Briggs (uncredited)
Paul E. Burns
— Dr. Evans (uncredited)
William Fawcett
— Zeke (uncredited)