Companions revert as time spirals out of control

Mawdryn’s mutation intensifies, pulling the TARDIS outside normal time. Nyssa and Tegan collapse into childhood forms, their ages reversing rapidly under the temporal strain. The Doctor tries to steer the ship clear of further paradoxes but faces an impossible fix—the only way to end the anachronism is to leave the TARDIS dangerously exposed. As alarms blare, the crew scrambles to stabilize reality while the Doctor silently weighs the cost of scarifying ship, companions, or his own regenerations to undo Mawdryn’s trap. key_dialogue: [ NYSSA JR: It's no good, Doctor. DOCTOR: We're travelling in the opposite direction out of the ellipse. It's having a reverse effect. ]

Plot Beats

The narrative micro-steps within this event

1

Nyssa and Tegan, now young children, express distress as the Doctor explains the reverse effect of their time travel direction.

concern to frustration ['Inside the TARDIS']

Who Was There

Characters present in this moment

4

Determined but secretly conflicted as he faces an unwinnable choice between saving companions or the TARDIS

The Doctor kneels beside the console, hands racing over controls while shouting orders and explanations. His face is tight with concentration as he tries to reconcile navigational commands with the ship’s failing temporal geometry, his usual calm replaced by focused urgency.

Goals in this moment
  • Reverse the temporal ellipse trapping the TARDIS and companions
  • Discern and neutralize unauthorized transmat activation
Active beliefs
  • The TARDIS’s sentience can be harnessed to break the paradox if isolation is achieved
  • Sacrificing ship stability is preferable to allowing companions to remain unstable
Character traits
Expert navigation despite chaos Commanding presence under pressure Analytical mind dissecting anomaly physics
Follow The Fifth …'s journey

Alarmed and helpless as she perceives time’s reversal as a personal annihilation

Tegan drops to the floor in childhood form, crying out for intervention as Nyssa speaks. Her panic rises as she tries to physically stop the Doctor’s adjustments, believing any movement risks worsening the distortion.

Goals in this moment
  • Halt any action she perceives as dangerous
  • Call attention to the immediate human cost of the Doctor’s decisions
Active beliefs
  • Time reversal is inherently malevolent and must be stopped at any cost
  • She alone can prevent further harm through vocal insistence
Character traits
Panic-driven urgency Impulsive protective instinct Heightened emotional response to instability
Follow Tegan Jovanka's journey
Supporting 2

Confused and increasingly alarmed as his actions produce unintended consequences

The 1977 version of the Brigadier operates the transmat capsule controls inside its chamber, unwittingly triggering the time loop by sending a duplicate version of himself. His confusion is palpable as the temporal effects manifest around him.

Goals in this moment
  • Stabilize his immediate environment despite temporal chaos
  • Complete the transmat sequence correctly based on his training
Active beliefs
  • Following instructions ensures safety and mission success
  • Temporal anomalies are disturbances to be corrected rather than consequences to be accepted
Character traits
Perplexed by unfamiliar controls Unknowingly complicit in the paradox Instinctively reactive rather than strategic
Follow Brigadier Alistair …'s journey

Unclear but possibly defiant or fearful of exposure

Turlough is implied to be directly operating the transmat terminal controls, having initiated the unauthorized transfer of the Brig '77 duplicate toward the TARDIS center. His presence is inferred from the Doctor’s suspicion rather than direct sight.

Goals in this moment
  • Complete temporal translocation regardless of consequences
  • Ensure his own involvement remains obscured
Active beliefs
  • The Doctor’s interference in his plans must be circumvented
  • Personal survival depends on controlling temporal technology
Character traits
Subversive operational intent Hidden behind mechanical sabotage Unwilling to reveal his full involvement
Follow Turlough's journey

Objects Involved

Significant items in this scene

4
TARDIS Klaxon Alarm

The internal klaxon alarms blare in shrill electronic wails, their cacophony piercing the console room as Tegan and Nyssa alternate between collapse and unstable restoration. The alarms synchronize with the temporal strain, their strobing light morphing reality’s edges into fractal disarray, forcing the crew to clap hands over ears while operating under mental duress.

Before: Silent or routine warning chimes; not yet active …
After: Continuously blaring, marking the instant the crisis entered …
Before: Silent or routine warning chimes; not yet active during prior events
After: Continuously blaring, marking the instant the crisis entered terminal phase
The Doctor’s TARDIS

The TARDIS’s central console pulses with emergency diagnostics as the Doctor attempts to steer the vessel away from the derelict spaceliner where Mawdryn’s temporal corruption originated. The ship’s sentience struggles against the transmat’s pull, its temporal cloak flickering as reality frays, forcing the Doctor to override systems despite the risks to companions.

Before: Functional but stressed by previous temporal anomalies; navigating …
After: Deeply unstable, hovering on the verge of collapse …
Before: Functional but stressed by previous temporal anomalies; navigating normally despite paradox warnings
After: Deeply unstable, hovering on the verge of collapse or catastrophic temporal breach if not corrected
Mobile Transmat Capsule (Turlough's Device)

Turlough’s transmat capsule activates without authorization from the terminal, sending a duplicate Brigadier (1977) toward the TARDIS center. Its geometric distortions ripple violently as it interfaces with the ship’s failed temporal locks, exacerbating the loop and pulling the TARDIS into Mawdryn’s ellipse.

Before: Idle in terminal, awaiting proper activation codes and …
After: Viciously destabilized, locked in unauthorized feedback with the …
Before: Idle in terminal, awaiting proper activation codes and temporal clearance
After: Viciously destabilized, locked in unauthorized feedback with the TARDIS’s homing systems
TARDIS Transmat Control Panel

The transmat control panel resists Turlough’s unauthorized activation sequence, its amber indicators flickering erratically like dying nerves. The Doctor halts the sequence mid-execution when he realizes the action’s correlation with the Brigadier’s duplicate’s appearance, exposing sabotage and complicating temporal correction.

Before: Locked under normal authorization protocols
After: Partially activated, generating temporal feedback that destabilizes the …
Before: Locked under normal authorization protocols
After: Partially activated, generating temporal feedback that destabilizes the capsule

Location Details

Places and their significance in this event

2
TARDIS Central Control Chamber

The TARDIS console room becomes the eye of the storm as temporal forces reverse companions’ ages and duplicate versions of the Brigadier collide within its confined hexagonal space. Emergency diagnostics cast eerie shadows while the Doctor’s frantic adjustments strain the ship’s architecture, nearly splitting reality within its own walls. The klaxons’ wailing transforms the room into a sensory chamber of emergency.

Atmosphere Relentlessly urgent and chaotically noisy, with sensory overload from alarms, flickering light, and fractured temporal …
Function Command center under siege
Symbolism Represents the fragile equilibrium between order and temporal disaster
Access Restricted to authorized crew within emergency permissions
Central console pulsing with emergency diagnostics in chaotic patterns Overhead panels groaning under temporal strain
Transmat Terminal Chamber

The transmat terminal acts as the vessel for unauthorized temporal translocation, its compact chamber housing the activation interface Turlough exploits. Emergency lighting casts blood-red pulses across metallic surfaces as the capsule’s destabilization warps the terminal’s electronics, bleeding temporal friction into the adjacent corridors of the TARDIS. Time itself dilates within the terminal’s hopeless geometry.

Atmosphere Clausrophobic and menacing under red emergency illumination, with acrid ionized metal tang thick in the …
Function Sabotage gateway to temporal disaster
Symbolism Embodiment of betrayal and broken temporal protocol
Access Restricted to senior crew under normal operations; bypassed via unauthorized access
Amber indicators flickering erratically on the control panel Ozone scent thick due to stressed circuitry and temporal feedback

Narrative Connections

How this event relates to others in the story

What led here 5

"The Doctor's urgency to escape in the TARDIS (Act 1) leads to the rapid aging of Nyssa and Tegan (Act 2), as they were contaminated by Mawdryn when they carried him into the TARDIS."

Doctor halts TARDIS departure to confront paradox
S20E12 · Mawdryn Undead Part 4

"The Doctor's urgency to escape in the TARDIS (Act 1) leads to the rapid aging of Nyssa and Tegan (Act 2), as they were contaminated by Mawdryn when they carried him into the TARDIS."

Brigadier voices limbo fears
S20E12 · Mawdryn Undead Part 4

"The Doctor's urgency to escape in the TARDIS (Act 1) leads to the rapid aging of Nyssa and Tegan (Act 2), as they were contaminated by Mawdryn when they carried him into the TARDIS."

Turloughs rush forces the Doctor to act
S20E12 · Mawdryn Undead Part 4

"Mawdryn's admission that Nyssa and Tegan will die if they leave the ship (Act 3) directly creates the Doctor's impossible choice—offer regenerations to save them or not."

Nyssa exposes Mawdryn’s betrayal to the crew
S20E12 · Mawdryn Undead Part 4

"Mawdryn's admission that Nyssa and Tegan will die if they leave the ship (Act 3) directly creates the Doctor's impossible choice—offer regenerations to save them or not."

Doctor pledges to save companions at great cost
S20E12 · Mawdryn Undead Part 4

Themes This Exemplifies

Thematic resonance and meaning