William Hartnell
The Doctor (1)
Anneke Wills
Polly
Michael Craze
Ben Jackson
Patrick Troughton
The Doctor (2) (uncredited)
Robert Beatty
General Cutler
David Dodimead
Barclay
Dudley Jones
Dyson
Alan White
Schultz
Earl Cameron
Williams
Callen Angelo
Terry Cutler
John Brandon
American Sergeant
Shane Shelton
Tito
Steve Plytas
Wigner
Christopher Matthews
Radar Technician
