Cast
- Peter Davison (The Doctor)
- Sarah Sutton (Nyssa)
- Anneke Wills (Polly Wright)
- Russell Floyd (Gerry Lenz)
- John Pickard (Thomas Brewster)
- Mark Williams (Maxwell Edison)
- Pam Ferris (Lizzie Corrigan)
- Roger Hammond (Harold Withers)
- Susan Brown (Alice Withers)
- Nick Brimble (Dudley Jackson / Dave)
- Abigail Hollick (Jane Potter)
- Barnaby Edwards (Vicar)
- Nicholas Briggs (Geoff)
Doctor Who - The Monthly Adventures
128. Doctor Who: The Eternal Summer
Written by Jonathan Morris
Starring Peter Davison Sarah Sutton
