Last updated 24 March 2024


Episode Six

Series Episode Number: 355

World Premiere: Sat 23 Jun 1973 - 5:50pm BST [BBC One] (United Kingdom)
First Broadcast: Tue 25 Nov 2014 - 8:30pm EST [Retro TV]
Running Time: 26 minutes 6 seconds

7.00 Million (UK)


Chart Position: 30 () (UK)

Recorded on Mon 30 Apr 1973 in TC3
Archive State: PAL 2 VT



Cliff is dying and the maggots are on the verge of transforming into giant flying insects. Time is running out for the Doctor as BOSS launches its plan for world domination.


Production Team hide uncredited
WriterRobert Sloman
WriterBarry Letts (uncredited)
DirectorMichael E Briant
ProducerBarry Letts
DesignerJohn Burrowes
Script EditorTerrance Dicks
Studio LightingMike Jefferies
Studio SoundRichard Chubb
Costume DesignerBarbara Kidd
Make-upAnn Rayment
Visual Effects DesignerRon Oates
Film CameramanBill Matthews
Film CameramanKen Lowe
Film SoundSimon Wilson
Film EditorAlastair Mackay
Incidental MusicDudley Simpson
Special SoundDick Mills
Title MusicRon Grainer
and BBC Radiophonic Workshop
Visual Effects AssistantRichard Conway (uncredited)
Visual Effects AssistantColin Mapson (uncredited)
Assistant Floor ManagerKarilyn Collier (uncredited)
Production AssistantJohn Harris (uncredited)
Production AssistantMichael McDermott (uncredited)
Technical ManagerTommy Dawson (uncredited)
Vision MixerJohn Gorman (uncredited)
Grams OperatorGerry Borrows (uncredited)
Costume AssistantRobin Stubbs (uncredited)
Costume AssistantSteve Pokol (uncredited)
Design AssistantPaul Trerise (uncredited)
Film Camera AssistantDick Lane (uncredited)
Film Camera AssistantGeorge Gibbins (uncredited)
Film Sound AssistantBrian Biffin (uncredited)
Film AssistantDennis Rogers (uncredited)
PropsRoy Osbourne (uncredited)
PropsDon Cattin (uncredited)
Props BuyerDave Lewis (uncredited)
Floor AssistantJames Piner (uncredited)
Inlay OperatorNick Rodger (uncredited)
Inlay OperatorGeoff Vian (uncredited)
Film Editor AssistantGordon Thompson (uncredited)
Director's AssistantBrenda Loader (uncredited)
Director's AssistantJudith Harris (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)
Title SequenceBernard Lodge (uncredited)