The Ultimate Foe
- Category: Season 23
- Written by astoller

PRODUCER | WRITER | SCRIPT EDITOR | DIRECTOR |
| John Nathan-Turner | Robert Holmes Pip Baker Jane Baker | Eric Saward John Nathan-Turner | Chris Clough |
| REGULAR CAST Colin Baker - (The Doctor) Bonnie Langford - (Mel) | GUEST CAST Michael Jayston - (The Valeyard) Lynda Bellingham - (The Inquisitor) Tony Selby - (Glitz) Anthony Ainley - (The Master) Geoffrey Hughes - (Popplewick) James Bree - (Keeper of the Matrix) |
SYNOPSIS
Snatched out of time and place and brought before the Time Lords of Gallifrey, the Doctor is on trial for his life.
While the Doctor asserts that the evidence of the Matrix, the repository of all Time Lord knowledge, has been tampered with, the mysterious and vengeful prosecuting council, the Valeyard, is confident that the Doctor will be sentenced to death.
In a dramatic intervention the Valeyard’s true identity is revealed but he escapes from the Courtroom into the Matrix, and it is into this nightmare world that the Doctor must follow - to his face his ultimate foe...

