as Detective Dave Lewis
as Commander (uncredited)
as Mug (uncredited)
as Investigator Hogan
as Doctor Calloway
as James Benson
as Capt. Long [Chs. 1-2, 4, 11-12]
as Van Martin - Announcer
as Fred Morgan
as Butch
as Al Bolger
as Square Deal Scottie
as Big Jim Johnson
as Arthur Enslee
as Kurt Redman
