Tom Baker
The Doctor
Acting
Elisabeth Sladen
Sarah Jane Smith
Acting
Ian Marter
Harry Sullivan
Acting
Nicholas Courtney
Brigadier Lethbridge-Stewart
Acting
John Levene
RSM Benton
Acting
John Woodnutt
Duke of Forgill / Broton
Acting
Keith Ashley
Zygon
Acting
Ronald Gough
Zygon
Acting
Lillias Walker
Sister Lamont
Acting
Angus Lennie
Angus
Acting
Tony Sibbald
Huckle
Acting
Hugh Martin
Munro
Acting
Robert Russell
The Caber
Acting