Last updated 24 March 2024


Episode 2

Series Episode Number: 259

World Premiere: Sat 7 Feb 1970 - 5:16pm BST [BBC One] (United Kingdom)
First Broadcast: Mon 29 Sep 2014 - 8:30pm EDT [Retro TV]
Running Time: 23 minutes 8 seconds

7.30 Million (UK)

Appreciation Index: 58 (UK)

Chart Position: 68 () (UK)

Recorded on Mon 22 Dec 1969 in Television Centre 1
Archive State: PAL Restor



Investigating the caves, the Doctor is attacked by a dinosaur-like creature. Dr Quinn is hiding a secret that could endanger the lives of everyone.


Production Team hide uncredited
WriterMalcolm Hulke
DirectorTimothy Combe
ProducerBarry Letts
DesignerBarry Newbery
Incidental MusicCarey Blyton
Conducted ByCarey Blyton
Title MusicRon Grainer
and BBC Radiophonic Workshop
Script EditorTerrance Dicks (uncredited)
CostumesChristine Rawlins (uncredited)
Videotape EditorSam Upton (uncredited)
Make-upMarion Richards (uncredited)
Studio LightingRalph Walton (uncredited)
Studio SoundJohn Staple (uncredited)
Make-upTeresa Wright (uncredited)
Special SoundBrian Hodgson (uncredited)
Production AssistantChris D'Oyly-John (uncredited)
Film CameramanFred Hamilton
Film EditorBill Huthbert
Assistant Floor ManagerSue Hedden (uncredited)
and BBC Radiophonic Workshop (uncredited)
Visual Effects DesignerJim Ward (uncredited)
Vision MixerMike Catherwood (uncredited)
Grams OperatorJohn Sanderford (uncredited)
Technical ManagerBernard Fox (uncredited)
Floor AssistantJohn Norton (uncredited)
Location CaterersMossberry Williams (uncredited)
Artist BookingBarbara Buchanan (uncredited)
Title Music ArrangerDelia Derbyshire (uncredited)
Title SequenceBernard Lodge (uncredited)
Technical AdviceDavid Jarvis (uncredited)