Fabula
S20E13 · Terminus Part 1

Turlough’s sabotage exposed in confrontation

Turlough’s covert sabotage threatens the TARDIS as alarms escalate and the time rotor stalls, forcing Tegan to challenge him directly in the corridor. Suspicion mounts between them as Turlough deflects accusations with practiced charm while the unseen Guardian’s instructions grow more insistent from behind the roundel. The confrontation exposes the depth of Turlough’s deception, his shifting targets from the space-time element to outright control, and Tegan’s refusal to be manipulated by honeyed words. Their clash foreshadows the coming disaster, uniting the surface quarrel with the systemic collapse already manifesting aboard Terminus. key_dialogue: [ TEGAN: I'm being serious. What have you been doing? TURLOUGH: Nothing. You're being foolishly and unjustifiably suspicious. TEGAN: I think you're dangerous. TURLOUGH: I think we should try and be friends. TEGAN: I'm going to tell the Doctor about the roundel. TURLOUGH: Do so, but you'd only make a fool of yourself. ]

Plot Beats

The narrative micro-steps within this event

1

The TARDIS begins to malfunction violently, exhibiting alarming beeping, flashing lights, and a stalled time rotor, causing Tegan and Turlough to react.

tension to urgency ['TARDIS corridor']

Who Was There

Characters present in this moment

3

Distrust hardening into moral outrage and protective anger as she senses hidden malfeasance in the corridor’s oppressive quiet

Tegan strides rapidly through the corridor, her boots echoing with urgency, and halts inches from Turlough with a rigid posture. Her suspicions crystallize into accusation as she closely observes the roundel panel, voice sharp and unyielding. She declines to be seduced by his honeyed words and advances toward confronting him with the Doctor.

Goals in this moment
  • Uncover Turlough’s unauthorized actions in the corridor
  • Report his roundel interference directly to the Doctor for immediate redress
Active beliefs
  • No one should manipulate the TARDIS core systems without authority
  • Complacency enables danger and must be challenged promptly
Character traits
High vigilance Direct confrontation Skeptical questioning Protective loyalty
Follow Tegan Jovanka's journey

Professional obedience masking rising fear as his sabotage is discovered; charm deployed as a shield against exposure

Turlough stands pressed against the corridor wall with the roundel panel half-open, his fingers still resting on the blue-tinted switches as Tegan rounds the corner with determined strides. His initially smooth patter curdles into sharp deflection when cornered, his compliance with the Guardian’s instructions still trembling beneath the surface mask of nonchalance.

Goals in this moment
  • Complete the Black Guardian’s sabotage instructions at any cost
  • Prevent Tegan from discovering the nature or extent of his control panel manipulation
Active beliefs
  • Obedience to the Guardian ensures safety and eventual control of the TARDIS
  • Charm and verbal misdirection can neutralize human suspicion
Character traits
Deflective wit False affability Obedient compliance Latent panic
Follow Turlough's journey

Calculating dominance expressed through terse, imperative commands intended to override hesitation

The Black Guardian speaks through variable static in the corridor’s vents and via the roundel panel itself, commands arriving in a disembodied voice that grows more insistent as Turlough falters. His unseen presence drives Turlough’s obedience and fuels Tegan’s suspicion, making the corridor a conduit for temporal manipulation as much as a physical space.

Goals in this moment
  • Force Turlough to complete the sabotage sequence and seize control of the space-time element
  • Suppress rebellion by intensifying pressure during moments of detection
Active beliefs
  • Fear and immediate obedience are the most reliable tools of control
  • Turlough’s compliance must be enforced before Tegan’s interference becomes fatal to the plan
Character traits
Voiceless authority Manipulative urgency Silent coercion
Follow Black Guardian's journey

Objects Involved

Significant items in this scene

3
TARDIS Console

The primary control console mechanics receive displaced temporal energy via Turlough’s sabotage, their polished levers and pads emitting soft clicks and hums as the rotor slows and the ship lurches under temporal stress. The console trembles subtly, betraying the unseen violence of stolen control.

Before: Stationary and stable, reflecting the Doctor’s usual operational …
After: Vibrating with excess temporal displacement, indicators flashing erratically …
Before: Stationary and stable, reflecting the Doctor’s usual operational precision
After: Vibrating with excess temporal displacement, indicators flashing erratically under Guardian-altered instruction
Space-Time Element

The space-time element is the target of Turlough’s roundel sabotage, its Gallifreyan-engraved housing pulsing faintly beneath the console base until the blue switches release it. When removed, it resonates visibly and audibly, its warp signature detectable in the corridor as temporal integrity unravels.

Before: Housed beneath the console, integral to dimensional stability, …
After: Loosened and potentially removed from its housing by …
Before: Housed beneath the console, integral to dimensional stability, no indication of tampering
After: Loosened and potentially removed from its housing by Turlough’s controlled manipulations, warp ripples visible in the corridor’s air
TARDIS Roundel Sabotage Switches

Turlough opens the roundel panel in obeisance to the Black Guardian’s voice using the TARDIS’s own systems against itself, exposing the blue-tinted sabotage switches inside. He operates them in sequence to manipulate the space-time element beneath the console as alarms escalate and the rotor falters under temporal strain.

Before: Flush with the corridor wall, closed, and unremarkable …
After: Partially open, cavity exposed, switches visibly blue-hued from …
Before: Flush with the corridor wall, closed, and unremarkable during normal operations
After: Partially open, cavity exposed, switches visibly blue-hued from active current, roundel poised to snap shut on command

Location Details

Places and their significance in this event

2
TARDIS Control Room

Though physically distant, the console room’s failing mechanics echo through the corridor via a growing subsonic thrum and the rotor’s faltering glow, audible behind mounted panelling. The room embodies the consequences of Turlough’s choices, its systems groaning under sabotage while the Doctor remains absent, making Tegan’s threatened report to him both urgent and symbolic.

Atmosphere Underlying dread punctuated by metallic squeaks and the rhythmic dying pulse of the rotor
Function Silent echo chamber amplifying the corridor’s confrontation by demonstrating the sabotage’s escalating cost
Symbolism Stands for the Doctor’s absent guardianship and the fragility of temporal integrity
Rhythmic decay of the time rotor’s glow visible through distant archways Distant hum and sparks from destabilized console mechanics
TARDIS: Navigation Corridor

The TARDIS corridor becomes the battleground for trust and control as Tegan’s confrontation forces Turlough to abandon subtlety and rely on charm to obscure detection. Its narrowing profile and subdued amber lighting compress the moral tension into a close-quarters test of loyalty against deception, while distant machinery groans under temporal strain.

Atmosphere Clammy with light anxiety, its calm veneer stretched thin by escalating alarms and whispered imperative …
Function Stage for a verbal duel between exposure and evasion that doubles as a saboteur’s operational …
Symbolism Represents the fragile boundary between safety and temporal catastrophe within the very walls meant to …
Access Nominally open, but behavior and knowledge are tightly restricted by the Doctor’s protocols
Half-open roundel panel casting fractured blue light onto Turlough’s face Faint ozone tang from displaced temporal energy mixed with musty corridor air

Narrative Connections

How this event relates to others in the story

What this causes 2

"Turlough's initial fear and confusion under the unseen entity's guidance set up his later malicious sabotage of the TARDIS console, culminating in the violent malfunction."

Turlough tears the TARDIS heart from the console
S20E13 · Terminus Part 1

"Tegan's distrust and confrontation of Turlough's suspicious behavior early on escalates into a more urgent confrontation when she strongly accuses him in the corridor, revealing Turlough's inconsistent facade."

Tegan confronts Turloughs hidden agenda
S20E13 · Terminus Part 1

Themes This Exemplifies

Thematic resonance and meaning

Part of Larger Arcs