| Cast | Tom Baker (as The Doctor), Elisabeth Sladen (as Sarah Jane Smith), Ian Marter (as Harry Sullivan), Nicholas Courtney (as Brigadier Lethbridge-Stewart), John Levene (as Regimental Sergeant Major Benton), John Woodnutt (as Duke of Forgill / Broton), Lillias Walker (as Sister Lamont), Robert Russell (2) (as The Caber), Keith Ashley (as Zygon), Ronald Gough (as Zygon), Angus Lennie (as Angus), Tony Sibbald (as Huckle), Hugh Martin (2) (as Munro), Bruce Wightman (as Radio Operator), Bernard G. High (as Corporal), Peter Symonds (as Soldier) |
