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 Season 22 Doctor Who Blu-ray and interview clips with various actors who had appeared in Season 22 appeared as a kind of ad break. A sequel to both Mindwarp and The Widow's Assassin, 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 wanted to explore the universe, she invite him on board the TARDIS.

Cast

 * Nicola Bryant - Peri Brown
 * Leo Flanagan - Rex
 * Colin Baker - the Sixth Doctor (voice) (uncredited)

Crew

 * Writer - Pete McTighe

Continuity

 * Peri's disappearance following Yrcanos's assassination 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)