Casting
Anthony Eustrel
Harry Domain
Eugene Leahy
Dr. Gall
Derek Tansley
Dr. Hellman
Maurice Bannister
Jacob Berman
John Stuart
Alquist
Evelyn Moore
Emma
Joy Adamson
Sulla, a robotess
Patrick Troughton
Radius, a robot
Dermot Palmer
Primus, a robot
Viola Merrett
Helena, a robotess
John Baker
Marius, a robot
Pamela Stirling
Helena Glory