Last updated 17 August 2023


Part Four

Series Episode Number: 487

World Premiere: Sat 21 Oct 1978 - 6:22pm BST [BBC One] (United Kingdom)
First Broadcast: Fri 5 Jan 2001 - 10:30pm CST [Prairie Public Television]
Running Time: 25 minutes 16 seconds

8.40 Million (UK)

Appreciation Index: 64 (UK)

Chart Position: 46 () (UK)

Recorded on Sun 04 Jun 1978 in Television Centre 6



Time is running out for the Doctor and Romana in their struggle to defeat the Captain. They join forces with the Mentiads to prevent the Captain and Xanxia from using Zanak to consume Earth.


Characters hide uncredited
Doctor WhoTom Baker
RomanaMary Tamm
CaptainBruce Purchase
NurseRosalind Lloyd
Mr. FibuliAndrew Robertson
KimusDavid Warwick
MulaPrimi Townsend
PralixDavid Sibley
MentiadBernard Finch
Voice of K-9John Leeson
Guard (Pirate Planet)Gary Dean (uncredited)
MentiadTony Hayes (uncredited)
MentiadJames Charlton (uncredited)
MentiadJeff Wayne (uncredited)
MentiadRay Knight (uncredited)
MentiadBrychan Powell (uncredited)
MentiadColin Thomas (uncredited)
MentiadClive Rogers (uncredited)
MentiadPeter Whitaker (uncredited)
MentiadDerek Southern (uncredited)
Technician (Pirate Planet)John Cannon (uncredited)
Technician (Pirate Planet)Clinton Morris (uncredited)
Technician (Pirate Planet)Reg Turner (uncredited)
Technician (Pirate Planet)Gus Roy (uncredited)
Technician (Pirate Planet)John Moore (uncredited)