Prisoners of Fate (audio story)

Prisoners of Fate was the one hundred and seventy-fourth story in Big Finish's monthly range. It was written by Jonathan Morris and featured Peter Davison as the Fifth Doctor, Sarah Sutton as Nyssa, Janet Fielding as Tegan Jovanka and Mark Strickson as Turlough.

Publisher's summary
Twenty-five years ago, with Richter's Syndrome running rampant throughout the galaxy, the brilliant biochemist Nyssa, formerly of Traken, made 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...

Part one
to be added

Part two
to be added

Part three
to be added

Part four
to be added

Cast

 * The Doctor - Peter Davison
 * Tegan Jovanka - Janet Fielding
 * Turlough - Mark Strickson
 * Nyssa - Sarah Sutton
 * Sibor - Sarah Douglas
 * Galen/First Watchman - Alastair Mackenzie
 * Mahandra/Maxis/Computer - Anjella Mackintosh
 * Kartis/Lasarti/Second Watchman/Patient - Jez Fielder

Continuity

 * Adric mentions his mother having talked to him about Omega (TV: Arc of Infinity), the Cybermen and his namesake (TV: Earthshock) and her visit to the 17th century. (TV: The Visitation)
 * Adric mentions his mother meeting Turlough on Earth, at Brendon Public School, with a Brigadier, and a creature called Mawdryn. (TV: Mawdryn Undead)
 * Turlough refers to Purity, (AUDIO: The Whispering Forest) Vektris (AUDIO: Kiss of Death) and the Sontarans. (AUDIO: Heroes of Sontar)
 * Turlough refers to Nyssa being rejuvenated by Homogenite. (AUDIO: The Emerald Tiger)
 * When the Doctor is discussing time-sensitive races who could possibly see into the future, he refers to the Tharils, (TV: Warriors' Gate) the Jagaroth, (TV: City of Death) the Xeraphin (TV: Time-Flight) and the Time Lords. (TV: The Deadly Assassin)
 * Nyssa tells the Doctor that she met him at a later point in his personal timeline while he was regenerating into his sixth incarnation. (AUDIO: Winter)
 * The Richter's Syndrome story arc that began in AUDIO: Cobwebs concludes in this story.
 * The Doctor would later speak directly to his Type 40 through an avatar during his eleventh incarnation. (TV: The Doctor's Wife)
 * The Doctor later echoes his first TARDIS's final words as he is regenerating, "Is this death?" (TV: The Caves of Androzani)
 * The Doctor believes that the reason that Turlough and Tegan were easily possessed by the Type 50 was due to their possessions by Eldrad (AUDIO: Eldrad Must Die!) and the Mara (TV: Kinda, Snakedance, AUDIO: The Cradle of the Snake) respectively.