Fabula
Season 13 · Episode 25
S13E25
Tragic
Written by Robert Banks Stewart
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The Seeds of Doom Part 5

As a deadly alien plant, the Krynoid, grows and spreads, a scientist, a child, and their unlikely allies must stop it before it takes over the planet.

In a remote location, a Krynoid, an alien plant, has been awakened and is growing at an alarming rate. The Doctor, Sarah, and Scorby, along with his guards, try to escape and find a way to stop the creature. However, Chase, a botanist, becomes increasingly obsessed with the plant and eventually becomes a cult-like figure who believes the plant will bring about a new era for Earth. As the Krynoid continues to grow and spread, it begins to control other plants, using them to attack humans. The Doctor and his allies work to find a way to stop the Krynoid and prevent a global catastrophe. With the help of UNIT, they eventually find a way to defeat the creature using a defoliant.


Events in This Episode

The narrative beats that drive the story

40
Act 1

The narrative opens with Scorby and his guards engaging the Krynoid, drawing its attention away from the Doctor and Sarah. They retreat into a nearby cottage, hastily barricading the door with a settee. Inside, Scorby learns the terrifying truth: the monstrous Krynoid was once Keeler, his former associate, now transformed into a rapidly growing alien plant. This revelation underscores the profound and personal nature of the threat. Scorby's walkie-talkie connects him to Chase, who, alarmingly, orders them not to harm the Krynoid, revealing his escalating obsession with the alien lifeform. The Doctor attempts to reason with Chase, but the call is abruptly cut, highlighting Chase's irrationality and the isolation of the group. The Doctor then explains the Krynoid's catastrophic potential, warning it could grow to the size of Saint Paul's Cathedral and multiply to overtake the entire planet. A Krynoid tentacle violently smashes through a window, attacking them directly and demonstrating its aggressive nature. The creature then speaks, demanding the Doctor be handed over, sensing his knowledge of alien species. Scorby, driven by self-preservation, considers sacrificing the Doctor, leading to a heated argument with Sarah, who vehemently defends the Doctor's principles. The Krynoid issues an ultimatum: deliver the Doctor by daybreak. Faced with this dire threat, the Doctor devises a desperate plan: Scorby must create a Molotov cocktail to distract the Krynoid, offering a slim chance for escape. This act establishes the immediate danger, the Krynoid's intelligence, Chase's dangerous fanaticism, and the internal conflicts within the trapped group.

Scene 6
Failed diplomacy sparks violent reprisal

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 …

Krynoid Containment Cottage 6 characters 18 connections
Doctor warns of Krynoid apocalypse

The Doctor issues a desperate warning about the Krynoid's unstoppable expansion, describing its potential to grow to catastrophic size and consume all life on Earth. The plant's terrifying growth is …

Krynoid Containment Cottage 4 characters 18 connections
Krynoid gives ultimatum for Doctor at dawn

The Krynoid smashes through the cottage wall, revealing its growing intelligence and capacity for speech. It issues a stark ultimatum: surrender the Doctor by daybreak or face annihilation, shifting the …

Krynoid Containment Cottage 5 characters 18 connections
Scorby betrays the Doctor in crisis

The Krynoid’s ultimatum forces the cottage’s survivors to confront impossible choices. As the alien’s demands ring out, Scorby’s survival instincts fracture his fragile alliance with the Doctor, exposing his willingness …

4 characters 18 connections
Doctor devises desperate Krynoid escape plan

The cottage trembles as the Krynoid’s tendrils assault the walls, forcing the group into frantic action. Sarah fights the plant’s intrusion while Scorby reveals the extent of his self-preservation, accusing …

Krynoid Containment Cottage 3 characters 18 connections
Act 2

As daybreak approaches, the narrative shifts to parallel developments. In London, Sir Colin Thackeray at the World Ecology Bureau desperately tries to mobilize official help, struggling against bureaucratic inertia and the skepticism of Major Beresford. Meanwhile, back at the estate, Chase's descent into Krynoid worship accelerates. He prepares to photograph the towering creature, expressing a chilling lack of fear and a belief in the Krynoid's superiority. Scorby completes the Molotov cocktail, and the Doctor orchestrates their escape. Scorby throws the incendiary device, creating a diversion that allows the Doctor to flee in the Daimler, heading for London to seek urgent assistance. Sarah, Scorby, and the remaining guards also escape the cottage, regrouping in the relative safety of the greenhouse and plant lab. Scorby expresses cynicism about the Doctor's return, believing he has abandoned them, but Sarah fiercely defends the Doctor's integrity and selflessness, contrasting his principles with Scorby's opportunism. Their argument highlights the growing interpersonal tension and distrust. Outside, Chase is seen in a chilling sequence, taking photographs of the Krynoid, then beginning to communicate with it, expressing a desire to "help." The scene culminates with the Krynoid's immense bulk appearing to engulf him, symbolizing his complete surrender to its influence. This act builds the rising action, showing the Doctor's proactive efforts, the escalating threat at the estate, and Chase's complete psychological transformation into an antagonist.

Act 3

The Doctor arrives at the World Ecology Bureau in London, forcefully interrupting Thackeray and Beresford's meeting. He bypasses bureaucratic delays, presenting urgent evidence: a report detailing plant-related strangulations near Chase's estate. He reveals the Krynoid's terrifying new ability to channel its power to other plants, turning all vegetation on the planet hostile. Initially skeptical, Beresford and Thackeray are convinced by the Doctor's evidence and the mounting fatalities, agreeing to mobilize a laser gun team. The Doctor calls Sarah, informing her of the impending help and his imminent return with Sergeant Henderson. However, as Sarah speaks, a vine violently rips out the telephone line, cutting off communication and signaling a rapid escalation of the threat at the estate. Vines then smash through the lab windows, demonstrating the Krynoid's expanded control over the local flora. Simultaneously, Chase, now fully indoctrinated, is seen outside, proclaiming his vision of a "new world, silent and beautiful," where plants dominate. Scorby and Sarah witness the accelerating plant attacks, finding a man strangled by a vine, confirming the Doctor's dire warnings. They confront Chase in the greenhouse, where he is in a trance-like state, preaching about a "green paradise" and expressing his hatred for "animals" (humans), declaring their time is over. As they try to contain him, the plants in the greenhouse come alive, actively smothering Sarah, Scorby, and Hargreaves. Just as they face imminent death, the Doctor and Sergeant Henderson burst in, armed with military-grade defoliant. The Doctor sprays the attacking foliage, saving Sarah and Scorby, though Hargreaves perishes. Chase, enraged, struggles with Henderson, vowing retribution before escaping. The group retreats to the plant lab, barricading the doors, but the victory is partial; Henderson reveals they have used all the defoliant, and the Doctor warns that the remaining plants are the Krynoid's "eyes and ears," leaving them vulnerable to Chase and the overarching Krynoid threat.