Fabula
S13E26 · The Seeds of Doom Part 6

Doctor identifies Chase's Krynoid infection

The Doctor narrows his suspicion to Chase while plants press against the connecting door. Questioning Henderson about Chase's unexplained return from the Krynoid's proximity, the Doctor voices his suspicion that Chase is not merely infected but actively possessed. This moment shifts the group's perception of Chase from ally to potential enemy and accelerates their urgency to find and contain him before the Krynoid's spread makes escape impossible. The revelation casts Chase's earlier behavior in a new light and forces the group to confront betrayal within their ranks as the facility collapses around them. key_dialogue: [ DOCTOR: Will you just shut up a minute, please? You said Chase went outside and actually took photographs of the Krynoid, and came in apparently unharmed. Unharmed? SARAH: You mean he's actually infected? DOCTOR: Or possessed. ]

Plot Beats

The narrative micro-steps within this event

2

The Doctor expresses concern about Chase's behavior, suggesting a new and more sinister threat. He questions previous assumptions about Chase's condition.

concern to foreboding ['greenhouse plants are up against the …

The Doctor reveals his theory that Chase might be infected or possessed by the Krynoid, changing the group's understanding of their situation.

surprise to alarm

Who Was There

Characters present in this moment

3

Stunned confusion masking a soldier’s reflexive need to forge ahead in the face of disorienting new information.

Henderson stands baffled by the Doctor’s reasoning, his pragmatism clashing with this shift from enemy without to traitor within, while remaining rooted in the immediate mechanical failure of Major Beresford’s futile attempt.

Goals in this moment
  • to reconcile new facts with existing operational priorities
  • to maintain team cohesion amid escalating chaos
Active beliefs
  • orders and evidence must dictate action over unproven suspicions
  • the mission’s survival depends on clear-eyed analysis
Character traits
disciplined baffled pragmatic reactive
Follow Henderson's journey

Concern layered with the sharp edge of realism, her posture stiffening as the Doctor’s words collapse the boundary between ally and adversary.

Sarah absorbs the conjecture with sleek skepticism, querying the implications of Chase’s actions while her presence underscores the shrinking options available to the trapped team.

Goals in this moment
  • to test the validity of the Doctor’s suspicion against available facts
  • to safeguard the team’s fragile cohesion amid increasing pressure
Active beliefs
  • Chase’s behavior demands scrutiny not blind trust
  • lingering hesitation will undermine their already fragile position
Character traits
quick-witted inquisitive resourceful analytical
Follow Sarah Jane …'s journey

Urgency masking urgency—his sharp tone hides the weight of his realization and the fear that their ally may already be lost.

The Doctor seizes the moment to redirect the team’s scant attention toward Chase’s suspicious behavior, his voice cutting through Henderson’s dismissive tone and Sarah’s query with relentless focus.

Goals in this moment
  • to reorient the team’s attention to Chase’s potential deception
  • to force decisive action before the Krynoid breaches their refuge
Active beliefs
  • Chase’s unharmed return from the Krynoid’s presence is statistically impossible without alien intervention
  • every second wasted on hesitation risks irreversible consequences
Character traits
pragmatic skeptical manipulative focused
Follow Third Doctor's journey

Location Details

Places and their significance in this event

1
Antarctic Plant Lab

The lab’s smothering foliage presses against the connecting door like grasping hands, signaling the encroaching Krynoid’s dominance while the Doctor’s words tighten the noose around their dwindling resources and fleeing options.

Atmosphere Tense with creeping dread as escape routes vanish under the weight of alien expansion and …
Function Crisis chamber under siege
Symbolism Represents the shrinking space for trust and safety in a world where trusted allies may …
Access Effectively closed off to escape due to Krynoid overgrowth pressing against doors
fluorescent lighting flickering in erratic red-blue pulses the sharp scent of crushed foliage and antiseptic

Narrative Connections

How this event relates to others in the story

What this causes 4

"The Doctor’s deduction that Chase is infected or possessed (beat_59fcc1c995653f72) directly sets in motion Chase’s treacherous transformation into an active antagonist, culminating in his attack on Henderson and Sarah (beat_b882127d5e81242d)."

Scorby flees to a fatal end
S13E26 · The Seeds of Doom Part …

"The Doctor’s deduction that Chase is infected or possessed (beat_59fcc1c995653f72) directly sets in motion Chase’s treacherous transformation into an active antagonist, culminating in his attack on Henderson and Sarah (beat_b882127d5e81242d)."

Chase betrays Henderson in smokehouse
S13E26 · The Seeds of Doom Part …

"The Doctor’s deduction that Chase is infected or possessed (beat_59fcc1c995653f72) directly sets in motion Chase’s treacherous transformation into an active antagonist, culminating in his attack on Henderson and Sarah (beat_b882127d5e81242d)."

Doctor repairs radio contacts Beresford
S13E26 · The Seeds of Doom Part …

"The Doctor’s deduction that Chase is infected or possessed (beat_59fcc1c995653f72) directly sets in motion Chase’s treacherous transformation into an active antagonist, culminating in his attack on Henderson and Sarah (beat_b882127d5e81242d)."

Doctor battles Chase to save Sarah
S13E26 · The Seeds of Doom Part …

Themes This Exemplifies

Thematic resonance and meaning

Part of Larger Arcs