The Enemy Within

The Enemy Within is the 2021 Doctor Who Day Special, and serves as the final entry in season 3. It is also Riley Silverman's last regular serial as the Doctor and Ben Paddon's final serial as GM. The last scene marks the debut of both Silverman as the GM, and Dan Peck as a new incarnation of the Doctor.

Synopsis
The Master (Dino Andrade) returns to take revenge on Our Doctor (Riley Silverman), with Carrie (Châu Kate Lê) – and history itself – caught in the crossfire.

Plot
To be added

Major
To be added

Minor

 * Chancellery Guard
 * Prime Minister Cari
 * Prime Minister Rosen
 * Vistan
 * To be added

Cast

 * The Doctor - Riley Silverman
 * Carrie - Kate Lê
 * Engineer, Susan - Michael Nixon
 * Game Master - Ben Paddon


 * The Master - Dino Andrade
 * Introducing Dan Peck as The Doctor
 * Introducing Riley Silverman as the Game Master

Crew

 * Editing and Sound Design - David King
 * Theme music arrangement - Drew Krassowski
 * Story - Michael Nixon, Ben Paddon

Continuity

 * The Doctor and the Master are seen in their youth, laying on red grass
 * The Master is still out for revenge. (Family, Universe on Fire)
 * Gallifreyan society has been largely reformed, with elected leaders from both the Time Lords and the Sisterhood of Karn. (The Enemy of the Good)
 * The former UNIT soldiers are still active and doing good in the world. (Devils From The Deep, The Russian Worm)
 * The Master's "retirement speech" at Stonehenge is a parody of the Eleventh Doctor's speech in The Pandorica Opens.

Production

 * The serial title comes from a proposed name for the otherwise untitled 1996 TV story, which also features the Doctor facing off against the Master.