The Eternal Mystery (webcast)

The Eternal Mystery was a Doctor Who mini-episode written by Pete McTighe, and released in 2022. A trailer for the Doctor Who: The Collection — Season 22 Blu-ray and interview clips with various actors who had appeared in Season 22 appeared as a kind of ad break. A sequel to Mindwarp, and possibly The Widow's Assassin as well, the webcast featured the return of Nicola Bryant to the part of Peri Brown on screen.

Summary
On Krontep, a guard Rex questions a hooded figure praying in front of a statue of Yrcanos, who reveals herself as the Warrior Queen, Peri Brown. She tells him why she disappeared and that she visits the temple once a year with the Sixth Doctor. Learning that Rex wants to explore the universe, she invites him on board the TARDIS.

Cast

 * Peri Brown - Nicola Bryant
 * Rex - Leo Flanagan

Uncredited

 * Voice of the Sixth Doctor - Colin Baker

Crew

 * Writer - Pete McTighe

Continuity

 * Peri's disappearance following Yrcanos's death is mentioned and she reveals to her subjects that she resumed travelling with the Doctor. (AUDIO: The Widow's Assassin)
 * Rex's stepfather not wanting Rex to travel is similar to Howard Foster not wanting Peri to go travelling. (TV: Planet of Fire)
 * Peri's robe bears a resemblance to that worn by Ranith during COMIC: The Age of Chaos.