The Deadly Assassin is the third serial of the 14th season of the British science fiction television programme Doctor Who, which was first broadcast in four weekly parts on BBC1 from 30 October to 20 November 1976.
The Fourth Doctor has a precognitive vision about the President of the Time Lords being assassinated. The Doctor goes to Gallifrey to stop the assassination. At the Panopticon, a Gallifreyan ceremonial chamber, he notes a camera stationed on an unguarded catwalk. He also spots a sniper rifle next to the camera.
The Doctor fights his way to the catwalk, warning that the President is about to be killed. Unbeknownst to the Doctor, the assassin is among the delegates and shoots the President dead. However, the crowd sees the Doctor on the catwalk with the rifle and assumes he is the killer.
Under interrogation, the Doctor maintains that he has been framed. Eventually, Castellan Spandrell starts to believe him and orders Engin to assist him in an independent investigation. To delay his possible execution, the Doctor invokes Article 17 and announces that he will run for President, which guarantees liberty for those running for office during the course of an election.
The Doctor realises that it was the Master who had sent him the premonition of the assassination through the Matrix, a vast electronic neural network which can turn thought patterns into virtual reality. He decides to enter the Matrix to track the Master.
In the Matrix, the Doctor confronts an assassin who eventually reveals himself as Chancellor Goth. The Master, realising that Goth has been effectively defeated, tries to trap the Doctor in the Matrix by overloading the neuron fields. Engin gets the Doctor out of the Matrix, but Goth is fatally burnt.
The Doctor and Spandrell, accompanied by soldiers, make their way to the chamber where the Master and Goth were accessing the Matrix. They find the Master without a pulse and Goth dying. Goth reveals that he found the Master, near death, on Tersurus.
The Master was nearing the end of his final regeneration. Goth went along with his schemes mainly for power: he knew the President had no intention of naming him as a successor, but if a new election was held, Goth would be the front-runner. Before he dies, Goth warns that the Master has a doomsday plan.
Attempting to piece together what the Master and Goth were planning, the Doctor inquires as to what becoming the President entails. He is told that the President has access to the symbols of office: the Sash and Great Key of Rassilon. As Engin plays records that describe how Rassilon found the Eye of Harmony within the “black void,” the Doctor realises these objects are not merely ceremonial. He also realises that the Master injected himself with a neural inhibitor that mimics a deathlike state and is still alive.
The Doctor, Spandrell, and Engin arrive at the morgue to find that the Master has revived. The Master seizes the Sash from the President’s corpse and traps the three in the morgue. The Doctor explains that the Eye is actually the nucleus of a black hole, an inexhaustible energy source that Rassilon captured to power Gallifrey; the Sash and Key are its control devices.
The Doctor deduces that the Master was planning to steal this energy to gain a new cycle of regenerations; however, if the Eye is disrupted, Gallifrey will be destroyed and a hundred other worlds will be consumed in a chain reaction.
Inside the Panopticon, the Master makes his way to the obelisk containing the Eye. He unhooks the coils that connect it to Gallifrey and is prepared to access the energy. The Doctor makes his way to the Panopticon via a service shaft. The Citadel begins to quake, and cracks appear in the floor. The Doctor and the Master fight, until the Master loses his footing and falls into a chasm. The Doctor reconnects the coils and saves Gallifrey, although half the city is in ruins and many lives have been lost.
The Doctor is now free to return to his TARDIS. He bids farewell but also warns that the Master may not be dead as he had harvested energy from the obelisk before he was stopped and may have been able to channel it. As the Doctor’s TARDIS dematerialises, Spandrell and Engin witness the Master sneak into his own TARDIS and escape.
.
To view the list of other Doctor Who serials, please click this link
Doctor Who Episode Guides for Sale on Amazon
Step aboard the TARDIS and journey across the universe with every incarnation of The Doctor in this series of unofficial Doctor Who episode companions.
This collection of twelve books explores every televised adventure of the Time Lord’s lives.
Each volume in the series delves into a different Doctor’s era, offering detailed episode guides, behind-the-scenes insights, character profiles, and story synopses.
Once you have clicked the link, choose which book you want, and then whether you want to buy the Kindle (eBook) or Paperback versions.
Previews are available before you buy.
Visit the Australian Business and Leadership School
Discover more from Craig Hill
Subscribe to get the latest posts sent to your email.



