Cast
- Colin Baker (The Doctor)
- Nicola Bryant (Peri Brown)
- Jemma Churchill (Safira Valtris / Dr Maria Backhouse)
- Andy Secombe (Laris /Akros / Policeman)
- Allison McKenzie (Tondra / Dr Joan Dalton)
- Janet Henfrey (Dr Petherbridge)
- Jessica Knappett (Dr Ruth Horwitz)
- Paul Panting (Maylon / Geoff / Llangragen)
- Anjella MacKintosh (Standing / Olivia)
- Phil Mulryne (Trobe / Warma)
- Johnny Gibbon (Michael)
- Toby Fountain (Young Trobe)
Doctor Who - The Monthly Adventures
188. Doctor Who: Breaking Bubbles and Other Stories
Written by Lizbeth Myles Mark Ravenhill Una McCormack Nev Fountain
Starring Colin Baker Nicola Bryant
