Cast
- Colin Baker (The Doctor)
- Bonnie Langford (Melanie Bush)
- Ruth Madeley (Hebe Harrison)
- Cherylee Houston (Elise)
- Imogen Stubbs (Professor Patricia McBride)
- Toby Hadoke (Ron / Takeaway Guy)
- Paul Herzberg (Mr Betterment)
- Stephen Riddle (Killian Holm )
- Homer Todiwala (Tarek Gamal)
- Joseph Kloska (Tannus Vallon / Vallon’s Suit )
- Matthew Brenher (Khavûl / Khavûl’s Suit )
Doctor Who - The Sixth Doctor Adventures
Doctor Who: The Sixth Doctor Adventures: Purity Undreamed
Written by Paul Magrs Jonathan Morris Robert Valentine
Starring Colin Baker Bonnie Langford
