"This is a shortened version of the 1945 Republic serial "The Purple Monster Strikes," which was released to television in 1966."
Roy Barcroft
as The Purple Monster
James Craven
as Dr. Cygnus Layton
Dennis Moore
as Craig Foster
Linda Stirling
as Sheila Layton
Bud Geary
as Hodge Garrett
Joe Whitehead
as Stewart
Fred Howard
as Prof. Crandal
Rosemonde James
as Helen
Mary Moore
as Marcia
John Davidson
as Emperor of Mars
Wheaton Chambers
as Prof. Benjamin
Ronald Davidson
Producer
Marlin Skiles
Original Music Composer
Albert DeMond
Screenplay
Barney A. Sarecky
Milton Rosen
Fred C. Brannon
Director
Lynn Perkins
Spencer Gordon Bennet
Basil Dickey
Royal K. Cole
Bud Thackery
Director of Photography
Joseph F. Poland
Charles Maxwell
Music
Ed Borschell
Sound