Summoned back to Gallifrey, the Doctor is framed for the assassination of the Time Lord President. To prove his innocence, he must stand for election himself, uncover the traitor in the Time Lord High Council, fight a hooded killer in a nightmare cyberspace world of his enemy's devising and battle against an old foe now out to destroy the Time Lords: The Master.
Unfortunately the movie Doctor Who: The Deadly Assassin is not yet available on HBO Max.
| Production | Philip Hinchcliffe | Producer |
| Writing | Robert Holmes | Writer |
| Directing | David Maloney | Director |
| Writing | Robert Holmes | Script Editor |
| Sound | Dudley Simpson | Original Music Composer |
| Sound | Clive Gifford | Sound |
| Lighting | Brian Clemett | Lighting Director |
| Editing | Ian McKendrick | Editor |
| Costume & Make-Up | Jean Williams | Makeup Artist |
| Costume & Make-Up | Joan Ellacott | Costume Design |
| Camera | Fred Hamilton | Camera Operator |
| Sound | Graham Bedwell | Sound |
| Costume & Make-Up | James Acheson | Costume Design |
| Crew | Dick Mills | Special Sound Effects |
| Crew | Terry Walsh | Stunt Double |
| Art | Roger Murray-Leach | Production Design |
| Crew | Terry Walsh | Stunt Coordinator |
| Production | Nicholas John | Production Assistant |
| Visual Effects | Len Hutton | Visual Effects Designer |
| Visual Effects | Peter Day | Visual Effects Designer |
