"An astronaut enters a vortex and crash-lands on a parallel planet where he's not welcome."
Glenn Corbett
as Neil Stryker
Cameron Mitchell
as George Benedict
Sharon Acker
as Dr. Bettina Cooke
Lew Ayres
as Prof. Dylan MacAuley
George Coulouris
as Max Greene
Dean Jagger
as Carl Webster
Steve Franken
as Henry Maitland
Tim O'Connor
as Dr. Revere
Jerry Douglas
as Steve Perry
Arch Whiting
as Mike Frome
H.M. Wynant
as Eric Stoner
William Bryant
as Truck Driver
Virginia Gregg
as Ward E Administrator
Steven Marlo
as Guard
Ben Wright
as Doctor
Buck Young
as Tom Nelson
William Harlow
as (uncredited)
Gerald Sanford
Writer
Lee H. Katzin
Director
