Tom Baker
The Doctor
Cast (13)
Elisabeth Sladen
Sarah Jane Smith
Ian Marter
Harry Sullivan
Nicholas Courtney
Brigadier Lethbridge-Stewart
John Levene
RSM Benton
John Woodnutt
Duke of Forgill / Broton
Keith Ashley
Zygon
Ronald Gough
Zygon
Lillias Walker
Sister Lamont
Angus Lennie
Angus
Tony Sibbald
Huckle
Hugh Martin
Munro
Robert Russell
The Caber
Crew (5)
Douglas Camfield
Director
Robert Banks Stewart
Writer
Robert Holmes
Script Editor
Philip Hinchcliffe
Producer
Geoffrey Burgon
Original Music Composer