Adventure Sci-Fi TV Movie
The Doctor's TARDIS lands at the Snowcap space tracking station in Antarctica in December 1986. A routine space mission starts going wrong. When the base personnel's suspicions are roused, the Doctor informs them that the space capsule is being affected by the gravitational pull of another planet — a tenth planet in the Solar system.
Directed by
Derek Martinus
Written by
Kit Pedler, Gerry Davis
Robert Beatty
General Cutler
William Hartnell
The Doctor (1)
Patrick Troughton
The Doctor (2) (uncredited)
Glenn Beck
TV Announcer
Roy Skelton
Cybermen (voice)
John Brandon
American Sergeant
Michael Craze
Ben Jackson
Peter Hawkins
Cybermen (voice)
Steve Plytas
Wigner
Earl Cameron
Williams
Anneke Wills
Polly
Christopher Matthews
Radar Technician
Reg Whitehead
Cyberman
David Dodimead
Barclay
Dudley Jones
Dyson
Alan White
Schultz
Callen Angelo
Terry Cutler
Shane Shelton
Tito
Ellen Cullen
Geneva Technician
Christopher Dunham
R/T Technician
Harry Brooks
Cyberman
Gregg Palmer
Cyberman

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