Doctor and Peri enter the Rani's lab

The Doctor and Peri return to the Rani’s abandoned laboratory despite Peri’s clear misgivings about the risks. Peri doubts the plan while the Doctor presses forward, using his knowledge of the Rani’s methods to bypass the lab’s defenses. Peri’s hesitation reveals the growing strain between their alliance, as the Doctor’s recklessness forces her to confront the very real dangers they face in stopping the Master and the Rani. Their infiltration uncovers horrifying evidence of the Rani’s experiments, including the remnants of her murdered assistants, and sets the stage for the next revelations about her sinister intent.

Plot Beats

The narrative micro-steps within this event

1

The Doctor and Peri discuss their plan to re-enter the laboratory, with Peri expressing concern about the risks.

caution to determination

Who Was There

Characters present in this moment

5

Forced optimism concealing urgency and concern for Peri’s well-being.

The Doctor leads Peri into the abandoned laboratory despite her vocal misgivings, calmly examining the painted gas traps and rigging them to vent safely while referencing Shakespeare to deflect concern. He concedes Peri’s safety after she begins coughing from lingering mustard gas but insists on proceeding to the hidden cabinet entrance.

Goals in this moment
  • Neutralize the Rani’s lab defenses to safeguard Peri and himself
  • Locate the TARDIS and uncover the Rani’s current whereabouts
Active beliefs
  • Trusts his detailed knowledge of the Rani’s methods will suffice to avoid danger
  • Science must be stopped before it harms more innocents, regardless of personal risk
Character traits
Tactical calm under pressure Darkly witty Overconfident Pragmatically protective
Follow The Sixth …'s journey
The Rani
primary

Antagonistic and disconnected, operating through proxies and schemes.

The Rani is physically absent during the infiltration but her legacy and creations dominate the scene: murdered assistants, lethal traps, and a hijacked TARDIS. Her methods and experiments symbolize her ruthless scientific ambition.

Goals in this moment
  • Maintain control over her stolen TARDIS and remaining assets
  • Ensure her experiments cannot be undone easily
Active beliefs
  • Other beings exist only as components for her schemes
  • Deception and traps are necessary for survival and dominance
Character traits
Absent but ever-present through environment Cruelly efficient Scientifically detached
Follow The Rani's journey

Apprehensive and disbelieving, oscillating between duty and dread.

Peri reluctantly accompanies the Doctor into the Rani’s contaminated laboratory, repeatedly voicing concern about the risks while assisting him by retrieving protective masks and keys. Her growing revulsion at the lab’s horrors and the murdered assistants leads her to question the Doctor’s disregard for safety.

Goals in this moment
  • Safeguard the Doctor’s safety despite his recklessness
  • Gather information and tools needed to escape or counter the Rani’s traps
Active beliefs
  • The Doctor’s confidence in his knowledge of the Rani is warranted but risks are real
  • Morality outweighs scientific progress or personal survival
Character traits
Anxious but dutiful Morally outraged by the Rani's atrocities Grounded in practical reasoning Protective of the Doctor despite her fear
Follow Peripugilliam Brown's journey
Jack Ward

Referenced obliquely through the presence of Josh’s mask, a coerced assistant chemically conditioned by the Rani. His fate becomes emblematic …

George Stephenson

Mentioned in dialogue as the Doctor references the fate of the Rani’s assistants and her chemical theories, revealing Stephenson’s innovation …

Objects Involved

Significant items in this scene

6
Doctor's Key

Peri retrieves the Doctor’s TARDIS key from the cabinet, recognizing it by shape, and uses it to interface with the vessel’s systems later in the scene. The key becomes the linchpin connecting the Rani’s remote control to the TARDIS.

Before: Stored in the cabinet
After: Retrieved and later used at the TARDIS console
Before: Stored in the cabinet
After: Retrieved and later used at the TARDIS console
Rani's Chemical Control Apparatus and Maintenance System

The large wooden cabinet conceals the entrance to the Rani’s hijacked TARDIS. The Doctor unlocks it to reveal the time vessel, using ventilation to flush any lingering toxins before entering with Peri.

Before: Concealed entrance disguised as cabinet within the lab
After: Open, allowing access to the TARDIS interior
Before: Concealed entrance disguised as cabinet within the lab
After: Open, allowing access to the TARDIS interior
Fishing Reel

The Doctor uses the fishing reel to attach and trigger the painted screens concealing the mustard gas traps, revealing their lethal purpose and rendering them inert. Its mundane function contrasts starkly with the horrors of the lab.

Before: Stored in the Doctor’s possession as a tool
After: Used and set aside after triggering the traps
Before: Stored in the Doctor’s possession as a tool
After: Used and set aside after triggering the traps
Small Screwdriver

The Doctor uses the small screwdriver to work on the underside of the TARDIS console after Peri retrieves the key from the cabinet, preparing to interface with the Stattenheim remote control and exploit the Rani’s hijacked systems.

Before: Stored in Doctor’s waistcoat pocket
After: Used to access internal TARDIS systems
Before: Stored in Doctor’s waistcoat pocket
After: Used to access internal TARDIS systems
Master's Heavy Frisbees

The Doctor covers his nose and mouth with the handkerchief to filter toxic air while examining and dismantling the traps. Its plain cloth becomes a critical barrier against the laboratory’s poisoned atmosphere.

Before: Stored in Doctor’s pocket
After: Used and slightly dampened from exhalations
Before: Stored in Doctor’s pocket
After: Used and slightly dampened from exhalations
Rani's Buried Aggression Mines and Gas Trap System

Three painted screens conceal integrated mustard gas release systems. The Doctor rigs them to pivot and vent trapped gas safely, exposing the Rani’s deadly mechanism and allowing passage through the lab.

Before: Installed as active, lethal environmental traps within the …
After: Used by the Doctor to safely neutralize the …
Before: Installed as active, lethal environmental traps within the laboratory
After: Used by the Doctor to safely neutralize the gas threat

Location Details

Places and their significance in this event

2
Rani's Hijacked TARDIS Control Room

The Rani’s hijacked TARDIS is revealed through a concealed cabinet in the lab, its grey interior pulsing with violet energy from stolen temporal experiments. The Doctor’s entry initiates a critical systems interface.

Atmosphere Pulsing with alien technology and temporal instability, thick with ozone and the acrid tang of …
Function Contested temporal control center linked to the Rani’s remote systems
Symbolism Symbolizes the perversion of time travel technology to empower one villain’s ambition
Access Restricted to Time Lords or Rani’s delegates; immediate use required specialized knowledge
Time rotor moving and console lit by faint roundels Pedestals display Tyrannosaurus embryos in jars
The Rani's Hidden Laboratory

The Rani’s hidden laboratory serves as the primary battleground for the Doctor and Peri’s infiltration, where long-dead assistants lie scattered and mustard gas traps hum lethally. Its claustrophobic tunnels and flickering lights amplify the oppressive horror.

Atmosphere Oppressive and corpse-laden, thick with the stench of decay and toxic chemicals
Function Antagonist’s operational stronghold and death trap
Symbolism Represents unchecked scientific hubris trampling human dignity
Access Sealed to all but authorized personnel; lethal to unaided intruders
Bodies of former assistants still present Flickering arc lamps casting jagged shadows

Narrative Connections

How this event relates to others in the story

What led here 7

"The Doctor's entry into the Rani's TARDIS (beat_dbdbf3c727a264b6) is a direct result of him discovering and entering the lab with Peri (beat_f0e7e45c46c44ba3), where he finds the controls."

Doctor uncovers lab massacre and betrayal
S22E6 · The Mark of the Rani …

"The Doctor's entry into the Rani's TARDIS (beat_dbdbf3c727a264b6) is a direct result of him discovering and entering the lab with Peri (beat_f0e7e45c46c44ba3), where he finds the controls."

Master and Rani choose Stephenson as their pawn
S22E6 · The Mark of the Rani …

"The Rani's monitoring of her victim in the lab (beat_9d81c3c27dfdb85a) escalates to the Doctor and Peri discovering the bodies of her former assistants (beat_f0e7e45c46c44ba3), revealing her ruthlessness."

Rani’s laboratory exposed
S22E6 · The Mark of the Rani …

"The discovery of the Rani's lab and her victims (beat_f0e7e45c46c44ba3) leads to the direct confrontation and revelation of her alliance with the Master to harness scientists' genius (beat_6006508384f8f18d)."

Master and Rani choose Stephenson as their pawn
S22E6 · The Mark of the Rani …

"The discovery of the Rani's lab and her victims (beat_f0e7e45c46c44ba3) leads to the direct confrontation and revelation of her alliance with the Master to harness scientists' genius (beat_6006508384f8f18d)."

Doctor uncovers lab massacre and betrayal
S22E6 · The Mark of the Rani …

"The Doctor's plan to re-enter the laboratory (beat_8e610fa6db49f305) foreshadows the grim discovery of the Rani's former assistants (beat_f0e7e45c46c44ba3), suggesting the lab's sinister purpose."

Master and Rani choose Stephenson as their pawn
S22E6 · The Mark of the Rani …

"The Doctor's plan to re-enter the laboratory (beat_8e610fa6db49f305) foreshadows the grim discovery of the Rani's former assistants (beat_f0e7e45c46c44ba3), suggesting the lab's sinister purpose."

Doctor uncovers lab massacre and betrayal
S22E6 · The Mark of the Rani …
What this causes 8

"The Doctor's entry into the Rani's TARDIS (beat_dbdbf3c727a264b6) is a direct result of him discovering and entering the lab with Peri (beat_f0e7e45c46c44ba3), where he finds the controls."

Doctor uncovers lab massacre and betrayal
S22E6 · The Mark of the Rani …

"The Doctor's entry into the Rani's TARDIS (beat_dbdbf3c727a264b6) is a direct result of him discovering and entering the lab with Peri (beat_f0e7e45c46c44ba3), where he finds the controls."

Master and Rani choose Stephenson as their pawn
S22E6 · The Mark of the Rani …

"The Doctor's sabotage of the Rani's TARDIS navigation system (implied in beat_dbdbf3c727a264b6) leads to the TARDIS accelerating out of control during the climax (beat_afc98685bb6883fc), creating a high-stakes confrontation."

TARDIS collapses into prehistoric horror
S22E6 · The Mark of the Rani …

"The discovery of the Rani's lab and her victims (beat_f0e7e45c46c44ba3) leads to the direct confrontation and revelation of her alliance with the Master to harness scientists' genius (beat_6006508384f8f18d)."

Master and Rani choose Stephenson as their pawn
S22E6 · The Mark of the Rani …

"The Doctor's sabotage of the Rani's TARDIS navigation system (implied in beat_dbdbf3c727a264b6) leads to the TARDIS accelerating out of control during the climax (beat_afc98685bb6883fc), creating a high-stakes confrontation."

Time Lords wage psychic power struggle
S22E6 · The Mark of the Rani …

"The discovery of the Rani's lab and her victims (beat_f0e7e45c46c44ba3) leads to the direct confrontation and revelation of her alliance with the Master to harness scientists' genius (beat_6006508384f8f18d)."

Doctor uncovers lab massacre and betrayal
S22E6 · The Mark of the Rani …

"The Doctor's plan to re-enter the laboratory (beat_8e610fa6db49f305) foreshadows the grim discovery of the Rani's former assistants (beat_f0e7e45c46c44ba3), suggesting the lab's sinister purpose."

Master and Rani choose Stephenson as their pawn
S22E6 · The Mark of the Rani …

"The Doctor's plan to re-enter the laboratory (beat_8e610fa6db49f305) foreshadows the grim discovery of the Rani's former assistants (beat_f0e7e45c46c44ba3), suggesting the lab's sinister purpose."

Doctor uncovers lab massacre and betrayal
S22E6 · The Mark of the Rani …

Key Dialogue

"DOCTOR: The victim returns to the scene of the crime."
"PERI: Look, what if the Master and that awful Rani are inside?"
"DOCTOR: They won't be."