Spearhead from Space Part 4
When Earth is threatened by the Nestenes, an alien intelligence able to control plastic, the newly regenerated Doctor teams up with UNIT to stop their invasion, facing a deadly army of Autons and plastic-replicated officials to save the planet.
Following his regeneration, the Doctor finds himself on Earth and quickly becomes entangled in a new crisis. An alien intelligence known as the Nestenes are attempting to invade the planet, using plastic as a means to create Autons – lifeless but deadly humanoid figures – and facsimiles of key figures, including General Scobie. These replicated figures are intended to infiltrate positions of power and pave the way for a full-scale invasion.
The Brigadier and UNIT are already investigating strange occurrences linked to a plastics factory, but face bureaucratic obstacles thanks to the Nestenes' influence. The Doctor, with his unique understanding of the situation, joins forces with UNIT and scientist Liz Shaw to uncover the Nestenes' plan. They discover that the Nestenes are using a collective intelligence, part of which is housed in strange globes that have landed on Earth. The Doctor's initial attempt to study one of these brains ends with an overload of the circuit, but it confirms they are dealing with a powerful alien presence.
As the Nestenes' plan unfolds, the Doctor and Liz investigate a waxworks museum, where they discover plastic replicas of government officials and military personnel. Realizing the scale of the infiltration, they realize that the facsimiles are activated and are now strategically taking their places. They seek out the Brigadier, who is struggling to gain access to the factory due to General Scobie's interference – unaware the real Scobie has been replaced.
The Doctor and Liz infiltrate the waxworks museum after closing, where they encounter Channing and Hibbert overseeing the operation. They learn of Channing's plan to activate the facsimiles. While, at UNIT headquarters, the plastic Scobie attempts to take possession of the alien globe, leading to a confrontation with Captain Munro. With the help of Hibbert,. the Doctor and Liz learn more about the Nestenes' plan and motive of world domination.
As the Autons begin their attacks across the country, the Doctor races against time to develop a weapon to counteract the Nestenes' control. Hibbert begins fighting against Channing, leading to an explosive confrontation in the control room where the captured globe is located. The Doctor, Liz, and the Brigadier launch an assault on the plastics factory, facing heavy resistance from the Autons and the Scobie facsimile. The Doctor uses his makeshift device, a powerful electrical weapon, to destroy the Nestene's collective intelligence housed in a tank, deactivating the Autons and facsimiles.
With the Nestene threat neutralized, the Doctor negotiates terms with the Brigadier to remain with UNIT as their scientific advisor. He requires a laboratory, equipment, and the assistance of Liz Shaw. His conditions for staying are met, though he must return the car he borrowed. Now a member of UNIT, the Doctor stands ready to defend Earth from future threats alongside his new companions.
Events in This Episode
The narrative beats that drive the story
The episode opens in the UNIT laboratory where the Doctor, Liz, and the Brigadier examine a captured alien globe. An attempt to analyze its frequency overloads the circuit, but the Doctor confirms it is part of a collective alien intelligence, a 'brain' that sends signals to other globes. Liz deduces they are dealing with a single, collective entity. The Doctor explains that this intelligence, lacking physical form, must create a suitable shell, leading Liz to identify the plastics factory as the likely source. The Brigadier attempts to gain authority from General Scobie to raid the factory, but the call is abruptly cut off. Frustrated, the Brigadier mentions Scobie's flattery over a plastic replica made for Madame Tussauds, sparking the Doctor's immediate concern. The Doctor and Liz visit Madame Tussauds, discovering a display room filled exclusively with plastic replicas of top civil servants and military personnel, including General Scobie. The Doctor notes the uncanny realism, particularly a wound wristwatch on Scobie's replica, indicating active infiltration rather than mere display. Unable to contact the Brigadier, they decide to wait until closing time to investigate further. Meanwhile, in a control room, Channing discusses with Hibbert the creation of a 'perfect life form' within an environment tank, revealing his plan to activate the facsimiles and retrieve the 'swarm leader' (the captured globe). Simultaneously, the plastic Scobie (Scobie 2) arrives at UNIT HQ, attempting to seize the alien globe under false pretenses, leading to a tense standoff with Captain Munro, who refuses to release it without proper authorization. Scobie 2 threatens Munro with arrest for mutiny, asserting his authority.
In the UNIT laboratory, the Doctor’s failed attempt to analyze the alien globe—triggered by an overload—reveals its true nature as part of a collective intelligence. Liz deduces that the globes …
The Brigadier attempts to secure General Scobie’s approval for a raid on the Nestenes-controlled plastics factory—a critical strike against the alien invasion’s core infrastructure. The Doctor and Liz have just …
The Doctor and Liz enter Madame Tussauds expecting a wax museum, only to find a room filled with plastic replicas of government officials—including General Scobie—arrived suspiciously fast. The Doctor’s sharp …
The Doctor and Liz examine a Madame Tussauds display room filled with plastic replicas of government officials, including General Scobie. The Doctor questions an attendant about the materials used, learning …
In the darkened Madame Tussauds display room, Liz’s growing unease about the wax figures culminates in a moment of realization—they are Autons, the plastic-based alien soldiers. Her suspicion is confirmed …
The Doctor and Liz hide among the waxworks at Madame Tussauds as Channing—now revealed as the Nestene Consciousness’s primary agent—orders the plastic Auton facsimiles to abandon their disguises and infiltrate …
The Doctor and Liz hide among the wax figures at Madame Tussauds, observing as Channing and Hibbert activate the Auton facsimiles to replace real officials. When Channing exits, the Doctor …
After Madame Tussauds closes, the Doctor and Liz emerge from hiding, navigating the eerie, lifelike figures. Channing and Hibbert enter, with Channing sensing an 'alien life form' nearby, causing the Doctor and Liz to hide again. Channing activates the facsimiles, which then march out of the room to 'take their places.' The Doctor and Liz emerge, and the Doctor confronts Hibbert, attempting to break Channing's telepathic control by explaining Channing is the enemy of humanity and responsible for Ransome's death. Channing re-enters, forcing the Doctor and Liz back into hiding. The Doctor urgently contacts the Brigadier, informing him that the facsimiles are now active and infiltrating key positions across the country, demanding an immediate assault on the plastics factory. In the control room, the captured alien globe is delivered to Channing. He places it under a steel duct, transferring its energy into the tank, which begins to pulse, signaling the imminent activation of the Autons. As dawn approaches, Autons activate across the country, breaking out of shop windows and attacking civilians, police, and military installations, causing widespread chaos and communication blackouts. The Brigadier receives reports of these attacks, confirming the full-scale invasion has begun. In the UNIT laboratory, the Doctor frantically works on a makeshift electrical weapon, acknowledging its crude nature but asserting it's their only hope. He instructs the Brigadier to gather all available headquarters staff for an immediate assault on the factory, despite the limited forces.
In the Nestene-controlled UNIT control room, Channing—now fully revealed as the Nestenes' primary agent—dismisses Hibbert's utility and begins the final energy transfer from the alien globe to the Auton tank. …
In the Nestene control room, Channing—now fully revealed as a Nestene puppet—finalizes the invasion plan by transferring the last of the alien energy into the Auton tank, eliminating the need …
In the UNIT laboratory, the Doctor frantically assembles a makeshift weapon while Liz expresses exhaustion, underscoring the urgency of their situation. The Brigadier receives frantic reports confirming the Autons have …
In the UNIT laboratory, the Doctor frantically assembles a makeshift weapon against the Nestenes while Liz expresses exhaustion and skepticism about their dwindling time. The Brigadier receives urgent reports confirming …
In the Control Room, Hibbert—still under Channing’s psychic influence but beginning to resist—attempts to sabotage the Nestenes’ central tank, the source of their control over plastic. The Doctor’s earlier intervention …
In the Control Room, Hibbert—freed from Channing’s psychic control—attempts to sabotage the Nestenes’ central tank with a metal bar, desperate to undo his complicity in their invasion. Channing reveals the …
The Doctor, recognizing the urgency of the Nestene threat and the need for immediate action, bypasses UNIT’s conventional tactics by planting and detonating a small explosive charge on the factory’s …
The Doctor initiates a violent breach of the factory’s rear entrance using explosives, overriding its automated defenses and forcing UNIT’s infiltration. The act is a calculated escalation—necessary to confront the …
In the control room, Hibbert, partially freed from Channing's control, attempts to destroy the pulsing tank with a metal bar. Channing confronts him, revealing the Nestenes' ancient plan to colonize Earth and destroy humanity, promising Hibbert spared status for his unwitting help. Hibbert, horrified, continues his assault on the tank, but an Auton shoots and kills him. Simultaneously, a small UNIT convoy, led by the Brigadier and including the Doctor and Liz, approaches the factory. The Doctor uses explosives to breach a rear entrance. Inside, Scobie 2, leading a squad of regular army troops, confronts the Brigadier, attempting to arrest him. The Doctor intervenes, using his newly constructed electrical device to deactivate Scobie 2, revealing his blank plastic face and confirming he was never truly alive. The real General Scobie, back at Madame Tussauds, regains consciousness. With Scobie 2 neutralized, the Brigadier takes command of the army troops. The Doctor and Liz enter the factory, using the device to swiftly deactivate patrolling Autons. Outside, the remaining UNIT and army forces engage a wave of Autons in a futile firefight, suffering casualties as conventional weapons prove ineffective. In the control room, the Doctor confronts Channing, who boasts of the Nestenes' invincibility and reveals the creature in the tank is their collective brain, perfectly adapted for Earth. The Doctor, deducing that a collective can be destroyed as a group, prepares his device. Channing, in a desperate move, turns a dial on the tank to maximum, causing steam to pour out and tentacles to emerge, attacking the Doctor. Liz struggles to activate the device, but finally succeeds, sending a powerful electrical surge into the tank. The neuron explodes, destroying the Nestene collective and instantly deactivating all Autons nationwide. Channing is revealed to be another Auton, now lifeless. With the threat neutralized, the Doctor negotiates his terms for staying with UNIT: a laboratory, equipment, and Liz Shaw's assistance. He agrees to return the borrowed car and, when asked his name, introduces himself as 'Doctor John Smith,' signifying his new role as Earth's defender.
In a high-stakes confrontation at the factory yard, the Brigadier attempts to assert control over Scobie 2, who is now revealed to be an Auton replica. The Doctor intervenes, using …
Following the Doctor’s exposure of Scobie 2 as an Auton duplicate, the Brigadier seizes control of the scattered UNIT troops in the factory yard, restoring military discipline amid the chaos. …
In the aftermath of the Nestene threat's defeat, the Doctor briefs Brigadier Lethbridge-Stewart on the alien intelligence's capabilities and the ECT-like device's role in their victory. The conversation quickly pivots …
In the aftermath of the Nestene defeat, the Doctor pivots from technical discussion to strategic negotiation with the Brigadier. After securing UNIT resources—including Liz Shaw’s assistance and lab facilities—he abruptly …