On screen
Cast
13 credited performers
Anthony Eustrel
Harry Domain
Artwork unavailable
Eugene Leahy
Dr. Gall
Derek Tansley
Dr. Hellman
Artwork unavailable
Maurice Bannister
Jacob Berman
John Stuart
Alquist
Artwork unavailable
Evelyn Moore
Emma
Artwork unavailable
Joy Adamson
Sulla, a robotess
Patrick Troughton
Radius, a robot
Artwork unavailable
Dermot Palmer
Primus, a robot
Artwork unavailable
Viola Merrett
Helena, a robotess
Artwork unavailable
John Baker
Marius, a robot
Pamela Stirling
Helena Glory
Artwork unavailable
David Scase
A Robot