Last updated 24 March 2024


Episode Two

Series Episode Number: 313

World Premiere: Sat 4 Mar 1972 - 5:52pm GMT [BBC One] (United Kingdom)
First Broadcast: Tue 18 Nov 1975 - 6:30pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 30 seconds

9.70 Million (UK)


Chart Position: 26 () (UK)

Recorded on Tue 16 Nov 1971 in TC8
Archive State: RSC conver



The Doctor is eager to make peace between the Sea Devils and the humans but has discovered that the Master is up to his old tricks.


Production Team hide uncredited
WriterMalcolm Hulke
DirectorMichael E Briant
ProducerBarry Letts
DesignerTony Snoaden
Script EditorTerrance Dicks
Visual Effects DesignerPeter Day
Film CameramanPeter Sargent
Film EditorMartyn Day
Special SoundBrian Hodgson
Incidental Music BBC Radiophonic Workshop
Incidental MusicMalcolm Clarke
Title MusicRon Grainer
Title Music BBC Radiophonic Workshop
With thanks to Royal Navy
Studio LightingMike Jefferies (uncredited)
Studio SoundTony Millier (uncredited)
CostumesMaggie Fletcher (uncredited)
Make-upSylvia James (uncredited)
Grams OperatorGordon Phillipson (uncredited)
Film Operations AssistantPW Walsh (uncredited)
Film Sound AssistantAlec Christison (uncredited)
Film Camera AssistantJohn Jefford (uncredited)
Make-Up AssistantJoanne Burn (uncredited)
Technical ManagerPeter Valentine (uncredited)
Film Unit ElectricianJohn Collins (uncredited)
Film Camera AssistantIan Punter (uncredited)
Costume AssistantGrace Dawson (uncredited)
Artist BookingSybil Cave (uncredited)
Property BuyerJohn Watson (uncredited)
Production SecretarySarah Newman (uncredited)
Floor AssistantTony Cox (uncredited)
Costume AssistantJack Roe (uncredited)
Artist BookingPhyllis Page (uncredited)
Vision MixerJohn Gorman (uncredited)
Director's AssistantPauline Silcock (uncredited)
Film Unit ElectricianTony Thorpe (uncredited)
GripBill Paget (uncredited)
Film Camera AssistantRoger Twyman (uncredited)
ArmourerDouglas Needham (uncredited)
Costume AssistantBarry Simmons (uncredited)
Fight Arranger HAVOC (uncredited)
Fight ArrangerDerek Ware (uncredited)
AssistantPauline Silcock (uncredited)
Property BuyerJoe Bates (uncredited)
Assistant Floor ManagerJohn Bradburn (uncredited)
Production AssistantColin Dudley (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)
Title SequenceBernard Lodge (uncredited)
Location AssistantJennie Betts (uncredited)
DriverS Hedges (uncredited)
DriverEdward Kirkham (uncredited)
Location Transport Pergo Minibuses (uncredited)
Pergo DriverBert West (uncredited)
Location Catering Cinefood (uncredited)
Location Trailers Seacliff Holiday Caravans (uncredited)
Visual Effects AssistantLen Hutton (uncredited)