Last updated 24 March 2024


Part Two

Series Episode Number: 573

World Premiere: Tue 9 Mar 1982 - 7:05pm GMT [BBC One: Not Wales] (United Kingdom)
Running Time: 24 minutes 23 seconds

8.80 Million (UK)


Chart Position: 50 () (UK)

Recorded on Wed 11 Nov 1981 in Television Centre 8



With her crew vanishing mysteriously, Captain Briggs assumes the Doctor is the guilty party, but the traitor is closer to home� as are the Cybermen.


Characters hide uncredited
The DoctorPeter Davison
BriggsBeryl Reid
ScottJames Warwick
KyleClare Clifford
TeganJanet Fielding
NyssaSarah Sutton
AdricMatthew Waterhouse
BergerJune Bland
RingwayAlec Sabin
Cyber LeaderDavid BanksInfo
Cyber LieutenantMark HardyInfo
First Crew MemberMark Fletcher
Second Crew MemberChristopher Whittingham
(extra)Carolyn Mary Simmonds (uncredited)
(extra)Barney Lawrence (uncredited)
(extra)Jonathan Evans (uncredited)
(extra)Nicki Dunsford (uncredited)
(extra)Stephen Whyment (uncredited)
(extra)Lynne Brotchie (uncredited)
(extra)Jeff Wayne (uncredited)
(extra)Peter Gates Fleming (uncredited)
The DoctorWilliam Hartnell (uncredited)Info
PollyAnneke Wills (uncredited)Info
JarlReg Whitehead (uncredited)Info
The DoctorPatrick Troughton (uncredited)Info
CybermanGordon Stothard (uncredited)Info
Doctor WhoTom Baker (uncredited)Info
LesterWilliam Marlowe (uncredited)Info
CyberleaderChristopher Robbie (uncredited)Info
Commander StevensonRonald Leigh-Hunt (uncredited)Info