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Patrick Troughton
The Doctor

Frazer Hines
Jamie McCrimmon

Deborah Watling
Victoria Waterfield

Nicholas Courtney
Colonel Lethbridge-Stewart

Jack Watling
Professor Travers

Tina Packer
Anne Travers

Jon Rollason
Harold Chorley

Ralph Watson
Captain Knight

Jack Woolgar
Staff Sgt. Arnold

Richardson Morgan
Corporal Blake

Rod Beacham
Corporal Lane

Stephen Whittaker
Craftsman Weams

Derek Pollitt
Driver Evans

Bernard G. High
Soldier

Joseph O'Connell
Soldier

John Levene
Yeti