as Eddie Condon
as Jim Murray
as Alan Davis
as Ensign Wright (uncredited)
as Tom 'Bomber' Brown / Tom Hayes
as Richard Cabot
as Matt Hibbard
as Capt. Baker
as Bradley (uncredited)
as Eddie Farrell
as Hal Rogers
as Nifty Morgan
as Curtis Whitman
as Lamont Cranston / The Shadow
as Joe
as Bob Moore
as Lieutenant Dick 'Tex' Price
as Tom Marlin
as Stanley Lowell
as Talgon's Brother - a Martian Captain
as Nick Mantee
as Frank Bradley
as Elmer Laydon - One of The Four Horsemn
as Jimmy Stafford
as Ralph Percy
as Young Officer at Beer Garden (Uncredited)
as Don Shawhan
as Logger Paying Doctor (uncredited)
as Mason
as Stratosled Pilot (Talgon's Brother)
as Ray
as Party Guest (uncredited)
as Dallas
as Brick Bradford
as Party Guest (Uncredited)
as Alan Armstrong / Jack Armstrong
as Sgt. Cummings
as Reggie (uncredited)
as Sergei
as Al Williams
as Tom Stone
as Jack
as Detective (uncredited)
as NWMP Cpl. Jerry Hale
as Jim Marsden
as Jim Morgan
as Student
as Lee Davis
as Steve-Detective
as Robert "Bob" Eller
as J.W. 'Jack' Keaton, Jr.
as Frank Martin
as Jack's Friend (uncredited)
as Lt. Larry Farrell
as Lt. Wood
as Bruce Gordon
as Jack Hall
as (archive footage)
as Mike Samo
as Sam Wire
as 1st Admirer
as Lawrence 'Larry' Deering
as Clay Harrison
as Alan Armstrong / Spy Smasher / Jack Armstrong
as Party Guest
as Jerry Carter
as Steve Randall
as Paul Conrad
as Joe MacIntyre
as Bob, college boy at club
as Tex Hanlon
as Lieutenant Wilbur Allister
as Adam Dyer
as Cliff Mallory
as Jerry Devery
as Paulie Mitchell
as Dale Wentworth
as Alex Anderson
