Fabula
S13E2 · Terror of the Zygons Part 2

Device clings to Doctor on the moor

Stranded after his vehicle fails, the Doctor flees the pursuing Skarasen across Tullock Moor. Amid the chaos he detects a repeating signal and retrieves a tracking device from his pocket. In a sharp reversal of control, the alien technology adheres venomously to his hand, a physical manifestation of the Zygons' invasive strategy and a grim confirmation that their infiltration has already begun. The moment forces the Doctor to confront not just the Skarasen’s brute force but the unseen transformation looming over Earth.

Plot Beats

The narrative micro-steps within this event

1

The Doctor hears the Zygon signal device beeping, retrieves it from his pocket, and feels it stick to his hand.

fear to distress

Who Was There

Characters present in this moment

2

Heightened urgency masking the shock of invasive technology clamping to his skin

Stranded and sprinting across Tullock Moor, he momentarily pauses despite the thunderous approach of the Skarasen, lunges for a buzzing signal device in his pocket, yelps as the alien tracker adheres venomously to his hand, then forces himself onward with the unwelcome appendage clamped to his flesh.

Goals in this moment
  • Evasion—outrun the Skarasen while protecting himself
  • Investigation—identify and analyse the tracking signal’s origin
Active beliefs
  • That alien tech must be studied to be neutralised, even at personal risk
  • Speed and unpredictability can still outmanoeuvre an unstoppable beast
Character traits
Adaptive thinker Physically resilient Improvisational under pressure Intuitive risk-taker
Follow The Fourth …'s journey

Pure operational aggression—no fear, no mercy, only the hunt encoded into its biomechanical core

A mile-long biomechanical monstrosity thundering across the moor in relentless pursuit, its amplified roar periodically shaking the ground, each thunderous note driving the Doctor to greater desperation and speed.

Goals in this moment
  • Complete the hunt initiated by the Zygon activator
  • Eliminate the human target before it can escape or retaliate
Active beliefs
  • Prey marked by the tracker cannot escape its reach, only delay it
  • The Skarasen embodies Zygon tactical superiority and must not fail
Character traits
Relentless pursuit instinct Acoustic amplifying resonance Predatory persistence
Follow The Skarasen's journey

Objects Involved

Significant items in this scene

4
Skarasen

The Skarasen manifests physically within this moment as a colossal living weapon already in motion. Though not previously visible, its presence is confirmed by the Doctor’s urgent flight and the horrifying acoustic vibrations that inundate Tullock Moor, forcing the confrontation into immediate and unavoidable reality.

Before: Presumed embryonic form transported to Earth but not …
After: Unfurled and operational, thundering across the open bog …
Before: Presumed embryonic form transported to Earth but not yet unfolded or active upon the moor.
After: Unfurled and operational, thundering across the open bog in predatory aggression.
UNIT Land Rover (Skarasen Lure Vehicle & Tullock Moor Incident)

The Doctor’s land-based transport fails under the strain of Tullock Moor’s terrain and perhaps Zygon sabotage, leaving it immobilised and irrelevant to the chase. Its diesel scent mingles with peat smoke as the Doctor abandons it, turning the vehicle into a static obstacle in a terrain now dominated by organic and biomechanical terror.

Before: Engine at final sputter; immobilised on the moor …
After: Dead metal carcass abandoned to the elements as …
Before: Engine at final sputter; immobilised on the moor with no visible chance of restart.
After: Dead metal carcass abandoned to the elements as the pursuit shifts to wet earth and hawthorn scrub.
Zygon Tracking Device

The palm-sized black tracker, inert until moments ago, emits a sharp repetitive beacon the Doctor recognises as Zygon signature. As he grasps it, conductive filaments erupt and fuse into his skin with burning adhesion, instantly transforming the device from analytical tool to invasive parasite designed to claim him for transformation.

Before: A compact piece of captured Zygon tech carried …
After: Firmly attached to the Doctor’s right hand, its …
Before: A compact piece of captured Zygon tech carried in the Doctor's pocket, functioning as a signal analyser; inert and harmless in appearance.
After: Firmly attached to the Doctor’s right hand, its rim pulsing with bioluminescent veins as it attempts neural interface; now a direct conduit for Zygon monitoring and potential manipulation.
Zygon Trilanic/Monitoring Bug

Though not explicitly seen, the faint traces of the Zygon Trilanic Activator’s subsonic rhythm are detected by the signal device in the Doctor’s pocket. Its residual pheromone binding agent triggers recognition in the tracker, confirming alignment with the Zygon bio-weapon system and foreshadowing the Doctor’s impending entanglement in their network.

Before: Recovered from the oil rig wreckage and analysed …
After: No overt change in this beat—its lingering signature …
Before: Recovered from the oil rig wreckage and analysed by Harry earlier; still carrying residual Zygon pheromone signatures.
After: No overt change in this beat—its lingering signature continues to influence events indirectly.

Location Details

Places and their significance in this event

1
Tullock Moor

The sodden expanse of Tullock Moor becomes the theatre of a frantic footrace between the Doctor and a biomechanical terror. Each step risks mired submersion, every hawthorn bush offers fleeting concealment, and the omnipresent skyline denies cover from the Skarasen’s deafening onslaught. The moor’s mercurial ground amplifies both the Doctor’s exhaustion and the creature’s monstrous stride.

Atmosphere Desperate and primal, thick with the scent of peat and ozone, the air trembling with …
Function Open battleground devoid of shelter where movement itself defines survival
Symbolism Represents nature besieged by artificial malevolence, its beauty and danger reduced to a death race …
Access Open to pursuit; no human refuge exists beyond brief concealment points
Squelching, waterlogged turf that clings to shoes and risks inversion of step Gusts carrying the Skarasen’s resonant roar across the moorland

Narrative Connections

How this event relates to others in the story

What led here 3

"The Doctor's decision to drive the Land Rover and take the signalling device to lure the Skarasen away from the village immediately leads to the vehicle breaking down and the creature's pursuit across Tullock Moor, establishing a direct causal chain from strategic plan to field confrontation."

Unmasking Zygon plot and lure plan
S13E2 · Terror of the Zygons Part …

"The Doctor's decision to drive the Land Rover and take the signalling device to lure the Skarasen away from the village immediately leads to the vehicle breaking down and the creature's pursuit across Tullock Moor, establishing a direct causal chain from strategic plan to field confrontation."

Doctor lures Skarasen with signalling device
S13E2 · Terror of the Zygons Part …

"The signalling device becoming 'organic' and adhering to the Doctor's hand symbolizes the merging of alien technology with human agency, paralleling the Zygons' own fusion of human form and alien essence—a moment that foreshadows the Doctor's later control over the Skarasen's summoning."

Doctor flees Skarasen across the moor
S13E2 · Terror of the Zygons Part …
What this causes 1

"The signalling device becoming 'organic' and adhering to the Doctor's hand symbolizes the merging of alien technology with human agency, paralleling the Zygons' own fusion of human form and alien essence—a moment that foreshadows the Doctor's later control over the Skarasen's summoning."

Doctor flees Skarasen across the moor
S13E2 · Terror of the Zygons Part …

Part of Larger Arcs