Last updated 24 March 2024


Part Nine

Series Episode Number: 648

World Premiere: Sat 1 Nov 1986 - 5:47pm GMT [BBC One] (United Kingdom)
First Broadcast: Sun 11 Dec 1988 - 11:00pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 56 seconds

5.20 Million (UK)

Appreciation Index: 66 (UK)

Chart Position: 85 () (UK)

Recorded on Wed 16 Jul 1986 in Television Centre 1



The Doctor and Mel are taking a rest aboard the Hyperion III when a series of murders lead them to suspect there is more to Professor Laskey's party than initially appears.


Characters hide uncredited
The DoctorColin Baker
Melanie BushBonnie Langford
The ValeyardMichael Jayston
The InquisitorLynda Bellingham
Professor LaskyHonor Blackman
CommodoreMichael Craig
RudgeDenys Hawthorne
JanetYolande Palfrey
DolandMalcolm Tierney
BruchnerDavid Allister
Grenville/EnzuTony Scoggo
KimberArthur Hewlett
EdwardesSimon Slater
AtzaSam Howard
OrtezoLeon Davis
Guard/First GuardHugh Beverton
Hyperion III OfficerRichard Bonehill (uncredited)
Hyperion III OfficerRobert Goodman (uncredited)
Time LordKenneth Thomas (uncredited)
Time LordDavid Bache (uncredited)
Time LordDerek Hunt (uncredited)
Time LordDavid Fieldsend (uncredited)
Time LordJohn Buckmaster (uncredited)
Time LordLeslie Fry (uncredited)
Time LordJim Delaney (uncredited)
Time LordRoy Seeley (uncredited)
Time LordLew Hooper (uncredited)
Time LordDavid Eynon (uncredited)
Time LordJack Horton (uncredited)
Time LordMartin Clark (uncredited)
Time LordBob Hargreaves (uncredited)
Time LordBarry Butler (uncredited)
Court GuardOscar Peck (uncredited)
Court GuardGary Forecast (uncredited)
Court GuardJohn Capper (uncredited)
Court GuardKevin O'Brian (uncredited)
Clerk of the CourtIan Marshall-Fisher (uncredited)
Hyperion CrewQuint Boa (uncredited)
Hyperion CrewRichard Bonehill (uncredited)
Hyperion CrewPaul Holmes (uncredited)
Hyperion CrewJohn Constable (uncredited)
Hyperion CrewLea Derek (uncredited)
Hyperion CrewMartin Hyder (uncredited)
Hyperion CrewBarry Holland (uncredited)
Hyperion CrewRobert Goodman (uncredited)
Hyperion CrewJohn Small (uncredited)
Hyperion CrewMaurice Iley (uncredited)
Hyperion CrewKevin Vaughan (uncredited)
Hyperion CrewJonny Lee-Harris (uncredited)
Hyperion CrewMartin Clark (uncredited)
Hyperion CrewMichael Summerfield (uncredited)
Hyperion CrewGeoff Whitestone (uncredited)