Fabula
S20E10 · Mawdryn Undead Part 2

Tegan exposes the impostor to the Brigadier

Tegan’s triumph in restoring the TARDIS beacon curdles into suspicion when she turns it against the only authority figure present. Her sudden realisation that the wounded figure in the capsule may not be the Doctor forces her to question the Brigadier’s acceptance of the stranger’s identity. The tension between past loyalty and present vigilance sharpens, exposing fractures in trust that could derail their fragile cooperation in 1983’s increasingly perilous timeline. key_dialogue: [ TEGAN: Don't want to miss the Tardis, do we? I've just realised. The wounded thing in the capsule, maybe it isn't the Doctor after all. Come on. ]

Plot Beats

The narrative micro-steps within this event

1

Tegan reveals to the Brigadier her suspicion that the wounded entity in the TARDIS may not be the Doctor, creating uncertainty.

calm to uncertainty

Who Was There

Characters present in this moment

2

Defensively alert with growing unease, her instinct for self-preservation overriding trust in the moment

Tegan actively holds and wields the homing device, her demeanor shifting from cautious alertness to urgent suspicion. She speaks rapidly, her voice edged with a mix of defiance and unease as she dissects the Brigadier’s assumptions.

Goals in this moment
  • To ensure the correct personnel (the Doctor) recover the TARDIS
  • To expose a potential deception that threatens the crew’s safety
Active beliefs
  • That appearances can be deceiving in time travel crises
  • That authority figures may not recognize hidden dangers due to the Brigadier’s amnesia
Character traits
Alert Suspicious Assertive Paranoid tinge
Follow Tegan Jovanka's journey
Supporting 1

Cautiously accepting yet internally disquieted, his habitual command undermined by forgotten memories

The Brigadier listens intently, his gruff authority softened by his amnesia-induced uncertainty. He poses a tentative question about the device but remains passive, his neutral expression masking unresolved conflict over the stranger in the capsule.

Goals in this moment
  • To understand the purpose of the homing device
  • To reconcile his present ignorance with the past certainty of the Doctor’s trustworthiness
Active beliefs
  • That the Doctor’s companions act in good faith despite his memory gaps
  • That routine institutional settings (like teaching) can provide stability against cosmic chaos
Character traits
Uncertain Neutral Reflective Masked hesitation
Follow Brigadier Alistair …'s journey

Objects Involved

Significant items in this scene

2
Nyssa's Homing Device

The homing device is gripped firmly by Tegan, its activation serving as a catalyst for her abrupt shift in mindset. It transforms from a tool of rescue to a catalyst of doubt, her use of it exposing fractures in trust as she wields its communicative function to challenge the Brigadier’s acceptance of the capsule’s occupant.

Before: Recently activated by Tegan; functional and held securely …
After: Functional but reinterpreted by Tegan as an instrument …
Before: Recently activated by Tegan; functional and held securely in her hands
After: Functional but reinterpreted by Tegan as an instrument of suspicion; remains in her possession
Mobile Transmat Capsule (Turlough's Device)

The transmat capsule, its polished black surface reflecting no light, lies dormant in the background of the scene. Tegan’s suspicion now frames it as a potential deception — the 'wounded thing' inside could be an impostor, turning a rescue beacon into a harbinger of betrayal within their fragile timeline.

Before: Sealed, containing an unidentified injured figure (assumed to …
After: Unopened, its occupant’s true identity now under scrutiny
Before: Sealed, containing an unidentified injured figure (assumed to be the Doctor by the Brigadier)
After: Unopened, its occupant’s true identity now under scrutiny

Location Details

Places and their significance in this event

1
Brendon Public School Complex

The school corridor functions as a staging ground for tacit confrontation, its academic sterility contrasting with the cosmic stakes of Tegan’s revelation. The institutional setting amplifies the fragility of human structures against time travel chaos, its ordinary backdrop making the Doctor’s crisis feel even more precarious.

Atmosphere Escalated tension beneath a veneer of mundane routine, punctuated by the distant sounds of schoolchildren …
Function Silent arena for ideological clash, where institutional order is both refuge and blind spot
Symbolism Represents the mundane reality—both grounding and limiting—that the Doctor’s companions must navigate while grappling with …
Linoleum-floored corridor echoing with distant schoolboy cheers and closing doors Wooden desks cast long shadows in an empty classroom, emphasizing isolation despite proximity to others

Narrative Connections

How this event relates to others in the story

What led here 1

"Nyssa’s giving Tegan the homing device allows Tegan to attempt to return the TARDIS to the correct time, culminating in her successful activation of the device after discovering the temporal discrepancy."

Tegan resolves to flee TARDIS for help
S20E10 · Mawdryn Undead Part 2
What this causes 1

"Tegan’s suspicion that the burnt figure is not the Doctor (stated to the Brigadier) escalates into a direct confrontation with Nyssa, where Tegan insists the identity cannot be the Doctor, creating tension among the companions."

Companions question the Doctor's identity
S20E10 · Mawdryn Undead Part 2

Part of Larger Arcs