
Martin Landau
Commander John Koenig


A sentient cloud sends an illness to incapacitate most of the Alphans and a creature to take the base's life support core.
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Martin Landau
Commander John Koenig

Barbara Bain
Dr. Helena Russell

Catherine Schell
Maya

Tony Anholt
Tony Verdeschi

Nick Tate
Alan Carter

Zienia Merton
Sandra Benes

David Prowse
Cloud Creature

John Hug
Bill Fraser
Albin Pahernik
Space
Albin Pahernik
Kreno Animal

Joe Dunne
Security Guard
Roy Everson
Les Johnston

Harry Fielder
Gerry
Robert Reeves
Peter Reeves