|'Prisoners of Fate'
by Jonathan Morris
Twenty-five years ago, with Richter's Syndrome running rampant throughout the galaxy, the brilliant biochemist Nyssa, formerly of Traken, bade a painful farewell to her young family... and set off into the space, in search of a cure for this deadly disease.
She never returned.
Now, her grown-up son continues her work on the penal colony of Valderon, still desperate to make the breakthrough that eluded his presumed-dead mother.
So when the TARDIS lands on Valderon, bringing the Doctor, Tegan, Turlough and Nyssa to its fortress prison, the scene is set for a painful reunion... but not only for Nyssa. The Doctor's past is about to catch up with him too...
Peter Davison (The Doctor), Janet Fielding (Tegan Jovanka), Mark Strickson (Vislor Turlough), Sarah Sutton (Nyssa, Sarah Dougles (Sibor), Alistair Mackenzie (Adric / Galen / First Watchman), Anjella Mackintosh (Mahandra / Maxis / Computer), Jez Fielder (Kartis / Lasarti / Second Watchman / Patient)
Directed by Ken Bentley
*Featuring the Fifth Doctor, Nyssa, Tegan and Turlough
*A Big Finish Audio Production