Doctor Who: The Ambassadors of Death (Part 4)

Series 7, episode 15

Directed by (unconfirmed)
Michael Ferguson

Part four of seven. Liz has been captured by Reegan's men and the Doctor begins to suspect Taltalian is more involved than he appeared

Cast (unconfirmed)

Jon Pertwee
Caroline John
Nicholas Courtney
John Abineri
Ronald Allen
Robert Cawdron
Robert Robertson
Michael Wisher
William Dysart
Cyril Shaps
David Whitaker