Cast
- Tom Baker (The Doctor)
- Eleanor Crooks (Naomi Cross)
- Christopher Naylor (Harry Sullivan)
- Clive Hayward (Overseer Valtor / Trell)
- Clive Wood (Director Draaga)
- Joseph Kloska (Corg)
- Indra Ové (Bryarly / Quarks)
- Polly Kemp (Calo / Quarks)
- Rosalyn Landor (Morin / Quarks)
- Kayi Ushe (Samuel Clemetson)
- Reece Pantry (Arnold Dacres)
- Christopher Weeks (Captain Edward Sackville-Smythe)
- Helen Goldwyn (The Yukionna)
- Emily Woodward (Nala/Quarks)
Doctor Who - The Fourth Doctor Adventures
13C. Doctor Who: The Fourth Doctor Adventures Series 13: Dominant Species
Written by Sarah Grochala John Dorney
Starring Tom Baker Eleanor Crooks
