Harrison Chase's Earth Domination
A persistent conflict where Harrison Chase, informed by Felix Keeler and Scorby, seeks to control Earth's ecosystems and eliminate human interference, leading to direct confrontations with the Doctor and UNIT.
Involved Characters
- The Fourth Doctor
- Sarah Jane Smith
- Scorby
- Third Doctor
- Harrison Chase
- Felix Keeler
- Malcolm Stevenson
- Henderson
- Hargreaves
- Christopher Dunbar
- Krynoid
- Colin Thackeray
- Derek Moberley
- Major Beresford
- Scorby's Security Contingent (Morestran Guards)
- RAF Officer
- Green Winlett (Survivor)
- Laser Squad
- UNIT Security Trooper
Arc Timeline
Season 13
61 eventsThe Antarctic research team carefully extracts a frozen object from the ice, initially dismissing it as inert until Stevenson touches its surface and senses an unnatural vitality. Despite Winlett’s skepticism …
Dunbar arrives at Chase’s mansion with a stolen secret—photographs of an ancient, potentially extraterrestrial plant pod recently unearthed in Antarctica. Presenting it as a rare scientific specimen with global significance, …
With the Antarctic pod’s infection rapidly consuming Winlett and Thackeray’s telex confirming the crisis has overwhelmed local resources, Dunbar grasps for an institutional solution. His insistence on involving UNIT introduces …
As the research team grapples with mounting casualties from the mysterious pod infection, Moberley receives devastating news over the radio: the medical evacuation has failed, with White-out conditions grounding rescue …
Scorby and Keeler arrive under false pretenses as stranded pilots, forcing their way into the living quarters to assess the crisis firsthand. Their calm demeanor masks ruthless efficiency as they …
Winlett’s body is consumed by alien tendrils in sickbay while the Doctor and Sarah debate drastic measures. Moberley faces the impossible choice of amputation, knowing victory against the contagion is …
With the pod’s containment failing and the passageway collapsing into chaos, Winlett makes a lethal choice. Disregarding their partnership with Moberley, Winlett steps over the injured man and vanishes into …
Scorby seizes control by confiscating the rifle from its hiding place, immediately dismantling it as a symbolic and literal threat. When Keeler questions his motives, Scorby escalates from paranoia to …
Sarah arrives at the research lab to assist with retrieving the dangerous plant pod when she unexpectedly encounters Moberley’s corpse. His sudden death exposes a severe security breach and complicate …
From a high ridge over the Antarctic wastes, the Doctor studies the distant generator plant where an alien Krynoid has taken root. Stevenson explains the facility’s new fuel cell system …
Stevenson returns from searching for Winlett but finds only vague excuses about collapse. The Doctor strips away the diplomatic language and delivers the brutal truth that Winlett no longer exists …
Scorby’s discovery of Moberley’s corpse in sickbay immediately precedes the Krynoid’s violent emergence, confirming the alien threat’s proximity. His cold acknowledgment of the mark on Moberley’s body reflects his dismissal …
Scorby reveals his hidden bomb rigged to destroy the camp if flaws are triggered, turning his plan from removal of evidence to mass murder. When Keeler resists, Scorby restrains him …
The alien Krynoid erupts through the lab’s main entrance with violent speed, forcing Stevenson into immediate combat. As chaos engulfs the room, the Doctor spots Scorby’s plane lifting off, a …
In the sterile confines of the Antarctic plant lab, Harrison Chase steps into the adjacent greenhouse chamber where Scorby carefully unlocks a mysterious alien pod. Chase’s rare sense of childlike …
Dunbar arrives at Chase’s plant lab to inspect the alien pod, only to find the ruthless industrialist celebrating its acquisition. Their tense exchange quickly shifts when Dunbar reveals the unexpected …
Dunbar, alone in his office, makes a secret call to Harrison Chase to confirm that the Doctor and Sarah are being neutralized. He then warns Chase about the pod’s discovery, …
The Doctor and Sarah are lured into a deserted quarry lane by their chauffeur, who reveals himself as an armed assailant under Chase's command. Forced from the limousine at gunpoint, …
With the chauffeur's uniform in hand and a plan to avoid detection, the Doctor and Sarah approach Chase's mansion posing as staff. The Doctor's bold improvisation buys them entry through …
Cornered by Scorby’s gunmen in the Antarctic library, the Doctor and Sarah face immediate execution. Chase’s cold celebration over their capture reveals his fanatical devotion to forcing the alien pod …
Keeler examines the alien pod through a magnifying lens and notices abnormal biological growth on its surface. Realizing the perilous danger, he abandons scientific detachment and urgently orders Hargreaves to …
Chase offers the Doctor and Sarah a lethal preview of his devotion to the alien pod by forcing them to endure his self-composed Floriana Requiem. As the oppressive botanical music …
Hargreaves bursts into the greenhouse with dire news about the pod’s rapid growth in the annex, forcing Chase to suspend the preordained execution of the Doctor and Sarah. The moment …
Against Keeler’s explicit warnings, Chase overrides all safety protocols to order a nitrogen injection into the sealed pod. His obsession with unlocking the alien artifact’s secrets overrides caution and ethical …
In Keeler’s isolated lab, the pod’s expansion reveals grotesque vitality through widening seams and shifting angles. Keeler cowers in terror as the pod’s accelerating transformation horrifies him, its very form …
Sarah and the Doctor separate to evade capture, but her attempt to flee across the mansion grounds ends abruptly. A guard ambushes her from behind, weapon drawn, his threat underscoring …
In a frantic escape, the Doctor leaps through the skylight into Keeler's lab and immediately incapacitates Scorby with brutal efficiency. Grabbing Sarah, he seizes control of a gun and disarms …
Chase observes Keeler’s grotesque transformation into a plant-like organism with clinical detachment, dismissing urgent pleas for medical intervention with cold rationality. As Keeler’s skin turns green and his limbs spasm …
Hargreaves expresses grave misgivings to Chase outside the cottage as they oversee the Doctor’s containment in the pod. His warning about the potential danger posed by the prisoner goes unheeded …
Chase’s estate teeters on chaos as Scorby triumphantly reports The Doctor has been captured and locked in the compost room, while Hargreaves interrupts with a frantic call from Amelia Ducat …
Miss Ducat’s sudden demand to see Sir Colin Thackeray for an unpaid debt intrudes on the gatehouse standoff. The Watchman’s report carries a personal threat wrapped in a debt collection—one …
Chase ends all distractions in the Plant Lab with cold finality, declaring his workspace a no-interruption zone to assert unchallenged control. His ruthless dismissal of an unseen presence—likely Sarah or …
Sarah infiltrates the cottage's upper floor seeking the Doctor, only to confront the horrific truth of Keeler's Krynoid infection. His grotesque fusion with plant matter leaves him increasingly unstable, alternately …
Dunbar enters Chase's library to issue a final warning about the Krynoid experiment, but the scientist dismisses ethical boundaries and vows to continue. Hargreaves interrupts with frantic reports that the …
Scorby and his guards arrive firing wildly, forcing the Krynoid to abandon its pursuit of the Doctor and Sarah. What begins as reckless gunfire quickly shifts under the Doctor’s command …
With the Krynoid’s relentless growth outside turning the surrounding vegetation hostile, the Doctor and Scorby rush to secure the cottage as their last sanctuary. The heavy settee scrapes against the …
With the cottage barricaded against the encroaching Krynoid, Scorby’s walkie-talkie bleeps to life as Chase demands answers about the disturbance. Chase’s intrusion forces Scorby to report the dire reality of …
The Doctor and Sarah must break the horrifying truth to Scorby as the cottage comes under siege. Trapped by an advancing alien plant that was once his friend Keeler, Scorby …
As the Krynoid’s encroaching tendrils fracture the Plant Lab’s walls, Chase seizes command with desperate authority. Amidst the rising panic of his guards and subordinates, he singles out Scorby and …
With the cottage walls shaking under the relentless advance of the alien Krynoid, Scorby races to warn Chase of its rapidly growing presence and lethal capabilities. He recounts the gruesome …
Scorby seizes the Doctor’s walkie-talkie, attempting one last appeal to Chase, but the broken transmission dies as the Krynoid’s sentience asserts itself. A crushing tentacle breaches the cottage, shattering the …
The greenhouse lab hovers at the edge of collapse under the Krynoid’s growing menace. Scorby assumes command, issuing orders to fortify the building while dismissing any hope of escape—enraged that …
The vines have turned deadly. Sarah and Scorby discover a scientist strangled in the gardens, his body gripped by alien vegetation. The sight confirms the Krynoid’s escalation from encroaching menace …
Sarah and Scorby discover a corpse strangled by the Krynoid’s vines, confirming the plant’s deadly expansion. Chase appears indifferent, captured by his obsession with the creature’s twisted vision. As he …
Sarah, Scorby, and Hargreaves confront Chase as his cultivated plants turn violently against them, smothering their escape route. Chase’s ideological extremism erupts into full manic prophecy, declaring war on all …
As the Doctor and Henderson breach the greenhouse with defoliant in hand, Chase emerges in his corrupted state and attempts to stop their assault, revealing the depth of the Krynoid’s …
The Doctor and his companions watch in mounting horror as the Krynoid’s head tears open to release a blinding shaft of coherent light. The alien’s sudden aggressive display signals a …
Major Beresford directs his team to unleash another concentrated laser barrage at the advancing Krynoid biomass. The strike erupts across the grounds as the alien surges closer to the research …
The Doctor shouts for the others to use a rear exit as the Krynoid advances, guiding them past the alien’s blind spot. Major Beresford orders a laser barrage directly into …
The Doctor narrows his suspicion to Chase while plants press against the connecting door. Questioning Henderson about Chase's unexplained return from the Krynoid's proximity, the Doctor voices his suspicion that …
Chase's simmering panic erupts into outright sabotage as he views the defoliant tanks and the facility's sterile order. He targets the music system with violent precision, its destruction a visceral …
Scorby dismisses the Doctor's warnings and makes a desperate solo escape through a small door just as the Krynoid's forces breach the facility. His reckless departure into the surrounding vegetation …
The Krynoid’s relentless advance forces Henderson to aid the Doctor, unaware that Chase has already been fully consumed by the alien organism. While the Doctor and Scorby argue over desperate …
The Doctor races against time to stop Chase from feeding Henderson into the compost machine while the Krynoid's relentless advance shakes the facility. Scorby's cowardice leads him to flee into …
Trapped in the facility’s compost room as the Krynoid’s creeping dominion takes hold, Sarah confronts Chase’s transformation into a fanatical apostle of the alien’s nihilism. His calm, chilling devotion to …
Major Beresford retreats to a failing radio station in the facility’s outer wing as the Krynoid’s tendrils overwhelm the corridors outside. The static-choked signal bars fade with every second, but …
With laser attacks failing to slow the Krynoid’s advance, the Doctor seizes direct communication with Major Beresford to force a radical rethink. He delivers a stark timeline before the organism …
Chase, infected by the Krynoid and its zeitgeist of dominion, attempts to sacrifice Sarah Jane to the compost machine as part of his twisted devotion. The Doctor intervenes just as …
As the Krynoid’s creeping vines overtake the research grounds, the Doctor and Sarah scramble to shelter behind a fallen tree. The RAF’s aerial assault begins, their bombs reducing the historic …
As the Krynoid’s expansion threatens the facility, Thackeray seeks the Doctor’s expertise to avert catastrophe. Instead of urgency, the Doctor parries with absurd humor and empty pleasantries, masking the crisis …
The Doctor attempts to flee the escalating Krynoid threat by materializing the TARDIS to Cassiopeia, a casual remark masking his deeper unease. His distraction with banter and ill-timed jokes betrays …