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