S7E11
Tragic
Written by Malcolm Hulke
View Graph

Doctor Who and The Silurians Part 7

The Doctor races to stop a Silurian plan to destroy Earth's atmosphere while the Brigadier, distrustful of the alien race, contemplates a more permanent solution, risking interspecies war and the planet's future.

In the seventh episode of Doctor Who and the Silurians, the Doctor and his companion Liz Shaw find themselves caught in a deadly conflict between humanity and the Silurians, an ancient race of reptiles awakened from hibernation. The episode opens with UNIT, led by Brigadier Lethbridge-Stewart, struggling to contain the Silurian threat. Communication lines are down, and casualties are mounting as the Silurians launch attacks from their underground base.

The Doctor works tirelessly to develop an antidote for a deadly plague unleashed by the Silurians, while also seeking a peaceful resolution to the escalating conflict. However, his efforts are complicated by the Brigadier's distrust of the Silurians. A Silurian raid succeeds in capturing the Doctor; they intend to use him to reactivate a nuclear generator to power a device that will eliminate the Van Allen belt and make the planet uninhabitable for humans.

Liz manages to transmit the antidote formula, ensuring humanity's survival from the plague. The Doctor pretends to cooperate, but sabotages the Silurians' plan by overloading the reactor, rendering their device useless and their base flooded with radiation. Despite the Doctor's actions, the Brigadier, swayed by government fears, orders the Silurian base to be destroyed with explosives, leading to the apparent extermination of the entire Silurian race. The Doctor is horrified by this act of genocide, as he believed peaceful coexistence was possible. The episode concludes with the Doctor and Liz driving away, the Doctor lamenting the Brigadier's actions and the tragic loss of a potentially valuable alien civilization due to human fear and aggression.


Events in This Episode

The narrative beats that drive the story

34
Act 1

The episode opens with UNIT forces under siege by the Silurians, struggling with communication breakdowns and mounting casualties. Liz Shaw confirms the Doctor's antidote is effectively treating the plague, but the Brigadier, overwhelmed by the crisis, impatiently demands the full formula. Unbeknownst to them, Silurians have already captured the unconscious Doctor from his laboratory, leaving behind a dead UNIT soldier, Private Upton, and a cleverly sealed breach in the wall. Hawkins, a UNIT captain, discovers Upton's body and the suspicious wall, signaling a deeper infiltration. Liz, investigating the Doctor's lab, finds it ransacked but manages to piece together the antidote formula from scattered papers and successfully transmits it to Doctor Crawford, securing humanity's immediate survival from the plague. Simultaneously, deep within their base, the ruthless Silurian Junior, having usurped leadership by killing the previous leader, reveals a new, far more catastrophic plan: to use human nuclear technology to make Earth uninhabitable for humans by destroying the Van Allen belt. Realizing their human power source has been cut, the Silurians decide to force the Doctor to reactivate it. As the Brigadier grapples with escalating attacks and failing communications, he recognizes UNIT's isolation and vulnerability, setting the stage for the Silurians' direct assault on the research center to retrieve the Doctor and the generator. This act establishes the immediate threat, the Doctor's capture, and the Silurians' genocidal intent.

Act 2

The Silurians, led by the ruthless Junior, execute a swift and decisive raid, breaching the research center and bringing the captive Doctor with them. They confront the Brigadier and Liz, demanding compliance. During the tense standoff, Captain Hawkins attempts to intervene but is shot down by a Silurian, prompting the Doctor to assert that he will refuse all cooperation if any more humans are killed, forcing Junior to agree. The Doctor, Liz, and the Brigadier are then taken to the cyclotron room. There, the Doctor discovers the Silurians' true, horrifying objective: to utilize a "molecular disperser" powered by the human nuclear generator to eliminate the Van Allen belt. Liz explains the devastating consequences: Earth will become lethally hot for humans, while the cold-blooded Silurians will thrive. While feigning cooperation, the Doctor devises a desperate counter-plan. He instructs Liz to simultaneously lower all reactor rods, causing a catastrophic overload. The disperser explodes, and the reactor becomes permanently overloaded, flooding the entire area with lethal radiation that will persist for decades. Believing the humans will perish from the radiation, the Silurians retreat to their base, intending to re-hibernate until the threat subsides, leaving the Doctor, Liz, and the Brigadier trapped amidst the escalating danger. This act showcases the Doctor's ingenuity under duress and his commitment to protecting humanity.

Act 3

Trapped within the irradiated cyclotron room by the Silurians' actions, the Doctor, Liz, and the Brigadier face imminent danger. The Doctor frantically works to stabilize the overloaded reactor, eventually succeeding with a dramatic flash and bang, allowing for their potential escape. He then ventures into the Silurian hibernation area, where he encounters a still-living Silurian Junior, who attempts a final, desperate attack. The Brigadier intervenes, shooting Junior down. Despite the immediate threat and the recent violence, the Doctor expresses a profound desire to study the Silurian hibernation technology, hoping to revive them one at a time for peaceful negotiation and to harness their advanced scientific knowledge for humanity's benefit. He explicitly warns the Brigadier against entering the Silurian base, emphasizing his plan to return with proper equipment and scientists. As the Doctor and Liz depart in Bessie, the Brigadier, driven by government orders and his deep-seated distrust of the alien race, immediately commands Corporal Nutting to detonate explosives, permanently sealing and destroying the entire Silurian base. The Doctor and Liz witness the devastating explosions from a distance. Liz confirms the government's fear motivated the act. The Doctor, horrified and heartbroken, condemns the Brigadier's actions as an act of genocide, lamenting the tragic loss of an entire intelligent alien race and the squandered opportunity for coexistence, as they drive away from the scene of irreversible destruction.