Divine Impersonation and the Weight of Secrecy

The Doctor’s reckless backgammon wager with Kublai Khan—intended to reclaim the TARDIS—collapses when he loses, leaving Susan devastated and the group’s hopes of escape shattered. Meanwhile, Ling-Tau delivers Tegana’s fabricated …

Marco Polo interrogates Ian and Ping-Cho about Tegana’s alleged treachery, forcing them to recount their firsthand account of Tegana’s confession of serving Noghai and plotting to conquer the world. Despite …

The Doctor and his companions piece together Tegana’s treachery after Ian reveals the War Lord’s allegiance to Noghai. Barbara recalls Kublai Khan’s anger over Noghai’s army movements, prompting the Doctor …

In the immediate aftermath of Tegana’s failed assassination attempt and self-inflicted death, the Doctor and Susan seize the moment to flee Kublai Khan’s throne room. Marco Polo, having just defeated …

After Tarron’s departure, the Doctor dismantles the official narrative by physically reconstructing the murder scene with Barbara and Susan. He deduces the relief guard (Ayden) was the third man in …

Barbara and Susan arrive at Ayden’s home under the pretense of questioning Kala about the stolen micro-key, but Ayden’s sudden return disrupts their investigation. His hostile reaction—demanding they leave and …

The Doctor dismantles the prosecution’s case against Ian by orchestrating a dramatic courtroom reversal. He calls Sabetha as a witness, who produces a replica micro-key and publicly accuses Ayden of …

In the courtroom, Tarron conducts a psychometric analysis on the weapon used to kill Ayden, probing its residual energies for clues about the crime. Meanwhile, Ian and Barbara discuss the …

The Doctor’s desperate gambit to expose Ayden as the true killer backfires when Ayden is assassinated mid-confession, leaving the tribunal unconvinced. Despite Sabetha’s staged revelation of the micro-key—a ruse to …

The Doctor, attempting to subtly interrogate an Overseer about the road to Paris, inadvertently exposes his lack of forged papers, revealing himself as an outsider. The Overseer, enraged by the …

LeMaitre interrogates the Jailer about covert communication between Barbara, Susan, and Ian, revealing his suspicion of a coordinated resistance. After confirming their interactions, he demands the execution list and methodically …

In the jailer’s office, LeMaitre interrogates the jailer about covert communication between prisoners, revealing his strategic focus on dismantling the Doctor’s network. After confirming Ian Chesterton’s involvement, LeMaitre abruptly crosses …

The Doctor manipulates the Overseer’s insatiable greed by staging a fabricated celestial event—a false eclipse—to distract him. While the Overseer is preoccupied, the Doctor plants a gold coin in the …

Cully storms into a Dulcian Council meeting, disrupting their bureaucratic deliberations to warn of an alien invasion. He presents Zoe as living proof of the threat, but the Council—led by …

After Cully disrupts the Dulcian Council meeting with urgent warnings of an alien invasion, Director Senex dismisses the skeptical Councillors and privately confronts his son and Zoe. Senex reveals his …

Cully and Zoe burst into the Dulcian Council’s frivolous holiday meeting, interrupting a debate about recreational land use. Cully, frustrated by bureaucratic delays, immediately clashes with Bovem, who dismisses him …

In a private confrontation after the Council’s dismissal of Cully’s warnings, Senex interrogates Zoe about her origins, forcing her to reveal the truth about the TARDIS. His immediate dismissal of …

The TARDIS materializes silently in Beacon Alpha Four’s isolated computer bay, exploiting the crew’s distraction during their initial deployment. Lieutenant Sorba, overseeing his six-week assignment with his guards, is unaware …

The Doctor, Zoe, and Jamie materialize in Beacon Alpha Four’s computer bay, where the Doctor’s curiosity about the automated system’s purpose is cut short by Jamie’s paranoia about being caught. …

In the tense aftermath of the Doctor, Zoe, and Jamie triggering an alert at Beacon Alpha Four, Lieutenant Sorba—now aware of their presence—issues a brutal command to his guards. His …

The Doctor, Zoe, and Jamie flee through Beacon Alpha Four’s companionways, sealing hatches behind them to delay Sorba’s pursuing pirates. Jamie’s observation of a welding torch cutting through the first …

In a tense confrontation within the barn, Harper—having just freed Jamie and Buckingham—is recaptured by Von Weich’s forces. Under interrogation, Harper refuses to disclose the escapees’ location, instead using the …

In a sterile lecture hall, the Scientist demonstrates the organization's brainwashing technology by subjecting Lieutenant Carstairs—a British officer who previously resisted conditioning—to a prototype memory-rewriting machine. Initially lucid and hostile, …

The Doctor and Zoe’s cover as German spies is exposed when Carstairs, a brainwashed British officer, accuses them during a demonstration of the Scientist’s mind-control technology. The Doctor seizes the …

Jamie and Buckingham, freshly captured and bound, are dumped beside Harper—a resistance fighter who immediately reveals the horrifying truth: the Civil War they’re trapped in is a fabricated simulation, a …

In the tense conference room, Liz Shaw defends her team’s findings on the Silurian awakening against Dr. Lawrence’s dismissive skepticism, while Masters reluctantly acknowledges the evidence. The fragile ideological standoff …

In the tense aftermath of the Brigadier’s disappearance, Dawson’s discovery of Doctor Quinn’s body—evidence of Silurian violence—ignites a heated debate in the conference room. She argues for an immediate, aggressive …

Trapped in the caves, the soldiers—Hawkins, the Brigadier, and the increasingly erratic Robins—attempt to conserve energy while Robins compulsively scratches at the cave wall, his behavior growing more unhinged. When …

The Doctor clashes with Dr. Lawrence and Masters over the urgent need to quarantine the research facility to contain the Silurian plague. Lawrence resists, prioritizing his work, while Masters initially …

In Heldorf’s laboratory, Reegan—Carrington’s ruthless enforcer—violently silences the scientist mid-protest as Heldorf pleads to stop the removal of the irradiated astronauts, warning that moving them will kill them. When Heldorf …

In the tense, high-stakes environment of the Space Control Hangar, Cornish—frustrated by Quinlan’s bureaucratic obstruction—directly challenges the General’s moral priorities. The confrontation erupts as Cornish, his voice sharp with urgency, …

The scene splits into two parallel confrontations that escalate the tension around the second recovery capsule launch. In the Space Control Hangar, Cornish—frustrated by bureaucratic obstruction—delivers an ultimatum to an …

The event begins with a tense confrontation between Lennox and Reegan over access to the isolated astronauts, whose radiation levels have reportedly dropped. Lennox, driven by medical urgency and ethical …

In the underground laboratory, Reegan and Lennox argue over the astronauts' deteriorating condition after radiation exposure. Lennox, alarmed by the sudden collapse of one astronaut, demands access to examine them, …

The Doctor disrupts Captain Dent’s legal maneuvering by publicly exposing the IMC’s fabricated 'monster' attacks as optical illusions and robotic constructs. His accusation forces Dent to retreat temporarily, but the …

The Doctor returns to the dome entry area after narrowly escaping an IMC assassination attempt, where Governor Ashe and Captain Dent are locked in a tense standoff over mineral rights. …

In the power supply room, the Doctor successfully restores the colony’s electricity, only to discover that Norton’s earlier repair attempt was deliberately flawed—suggesting sabotage. Ashe expresses gratitude, but the Doctor’s …

The Doctor confronts Caldwell in the Survey Office, exploiting his moral unease to fracture his loyalty to IMC. By revealing Dent’s orders to execute him and imprison Jo Grant—coupled with …

Alastair Fergus delivers a live television report from the Devil's Hump dig site, his commentary laced with growing unease about the archaeological team's reckless disregard for local superstitions. As he …

At UNIT HQ, Benton is engrossed in Alastair Fergus’s live television broadcast about the Devil’s Hump—a site now linked to the awakening of an ancient evil. The Doctor, Jo Grant, …

Alastair Fergus begins a live television announcement about the midnight barrow opening, framing it as a historic archaeological milestone. Before he can finish, Professor Horner interrupts with brusque authority, redirecting …

The Doctor watches a live television broadcast featuring Alastair Fergus and Professor Horner at the Devil’s Hump dig site, where Horner dismisses local superstitions about the site’s curse as mere …

During a live broadcast at Devil’s Hump, Miss Hawthorne interrupts Alastair Fergus’s coverage of Professor Horner’s archaeological dig to issue a frantic, public warning about the impending supernatural catastrophe tied …

The Doctor races to Arcturus’ side as the full scale of sabotage becomes clear, disabling the life support’s redundancy to revive the stricken delegate. Jo argues for proactive pursuit of …

The conference room erupts as delegates demand answers about the attack on Arcturus, who can only respond that his memory circuits are failing. Alpha presses for details while Hepesh ties …

The Doctor faces false accusations from Ice Warriors Arcturus and Izlyr, who publicly claim the Doctor sabotaged Arcturus’s life support. Political maneuvering reveals their true motive—preventing Peladon’s alliance with Earth …

Ssorg delivers news that reframes the sabotage plot entirely. The recovered servo-junction unit, supposedly used in the attack on Arcturus’s life support, is found in the possession of the Earth …

The Ice Warrior Izlyr interrogates Arcturus about the life support sabotage and reveals the missing servo-junction unit implicates the Earth princess. Ssorg reports its discovery while on a perilous climb …

Hepesh offers the Doctor freedom in exchange for leaving Peladon before dawn, revealing the discovery of the TARDIS on the lower mountain slope. The Doctor insists on taking Princess Josephine …

The conference room erupts into panic as delegates debate fleeing Peladon to escape escalating danger, their anxiety palpable. Princess Jo stands firm against abandoning the Doctor, framing his execution as …

Jo reaches out to Izlyr in secret after learning of his hidden loyalty to the Doctor. United by a personal debt and desperation, they devise a plan that could save …

The Doctor takes a calculated risk by venturing into the tunnels to confront Aggedor with his modified sonic screwdriver, hoping to establish peaceful communication and expose Hepesh’s conspiracy through hypnotic …

The Doctor returns to the throne room with Jo to confront King Peladon and High Priest Hepesh, risking immediate execution to challenge their sacred laws. Defiantly declaring he carries a …

The Doctor enters the Marshal’s office during a formal hearing about martial law on Solos. As the Investigator presses the Marshal on allegations of genocide against the so-called Mutts—natives undergoing …

The Doctor’s theory gains crucial support when Professor Sondergaard is forcibly brought before the Investigator and testifies to the Marshal’s accelerated mutation experiments. Sondergaard directly contradicts the Marshal’s claim that …

The Doctor forces a confrontation with the fragile biology of Solos’ mutants, revealing the premature transformation was artificially accelerated by the Marshal’s atmospheric experiments. Cotton steps forward to pledge allegiance …

The Master humiliates Ruth by dismissing the crystal artifact as a worthless piece of quartz in front of her colleagues. His mocking tone and exaggerated disbelief at her objections underscore …

Ruth and Hyde voice their growing unease as the Master abruptly withdraws from supervising the final TOM-TIT demonstration, citing an impending meeting. Ruth argues for a trial run to mitigate …

Ruth and Hyde perform an unauthorized test of the TOM-TIT device, successfully transmitting a sealed jar through time. The experiment’s sudden success startles an unsuspecting window cleaner outside, proving the …

Ruth and Hyde discover the TOM-TIT device triggering a dangerous power surge during an unauthorized test, forcing them to act fast to prevent a catastrophic overload. Their emergency adjustments fail …

The TOM-TIT device’s crystal pulses with an unnatural glow after Ruth and Hyde’s failed transmission, draining power beyond expected limits. Ruth warns Hyde of a positive feedback surge that could …

General Williams subjects the Doctor to escalating brutality with a Draconian mind probe after securing the President's conditional backing, determined to force a confession of Draconian espionage. The Doctor resists …

After the Doctor withstands Williams' violent interrogation and the mind probe fails catastrophically, he and Jo reunite in their cell. Recognizing the futility of continued resistance, they abandon hope for …

General Williams escalates the interrogation, ordering the mind probe machine to dangerous levels to extract a Draconian conspiracy where none exists. The device erupts in malfunction, ending the session without …

The President of Earth delivers a sham trial sentence to the Doctor, stripping him of legal defenses and sentencing him to the Lunar Penal Colony under the Special Security Act. …

Jo's resistance to the Master's psychic assault shatters his elaborate illusions, revealing his true form. As she declares his tricks powerless, the Master's fury hardens into cold calculation. Ogrons drag …

Amid the escalating tensions between Earth and Draconia, Prince Hal, aboard the scoutship with General Williams and the Pilot, interrupts the military rush to violence. Facing imminent Draconian fire and …

Jo Grant hijacks the scoutship’s communication system under enemy fire to broadcast the coordinates of the Ogron base directly to Earth and Draconia. The Doctor scrambles to stabilize the failing …

The Doctor and his crew respond to Jo Grant's distress signal as the scoutship's failing systems threaten collapse. General Williams sees the homing signal as a clear path to rescue …

Trapped with war looming between Earth and Draconia, the Doctor and his allies debate a doomed situation. Jo Grant’s resourcefulness shines when she recalls the Master’s hypnosound device as a …

Under Finch’s orders, Captain Yates drags the Doctor into UNIT HQ at gunpoint while Benton stands witness. In a tense confrontation, Finch refuses to question the Doctor immediately, prioritizing his …

The Doctor, arrested by UNIT under Finch’s orders, turns the tables by revealing Captain Yates as a traitor secretly working for Grover. The Heavyweight revelation forces Benton to confront his …

As the Butler delivers his grim prognostic of societal collapse through escalating unrest and authoritarian backlash, Sarah storms in and seizes control of the moment. Her abrupt interruption shatters the …

Sarah

Sarah Jane Smith forces her way into UNIT headquarters and confronts Bryon over access restrictions before General Finch appears. When she forces the issue of the Doctor’s recapture and imprisonment, …

Sarah confronts General Finch in the UNIT war room moments after forcing her way inside, demanding answers about the Doctor’s sudden re-arrest. Her insistence reveals contradictory accounts from Bryson, sharpening …

Sarah confronts the revived passengers with the devastating truth that their spaceship is a deception, that they are not traveling to a new world but are being manipulated toward a …

Ruth and Robinson lead the effort to discredit Sarah’s claims while Mark breaks ranks to trust her warnings. When Mark insists on checking the airlock against Ruth’s orders, Robinson physically …

Ruth and an unnamed ally seize Sarah Jane and physically drag her away after she desperately tries to convince the passengers the spaceship is a deception. Ruth brands Sarah dangerous …

Sarah and Mark aggressively confront Grover’s justification for the time-reset scheme, drawing clear moral lines between Grover’s vision of a new world and the truth of its creation. Grover responds …

Sarah invites the skeptical Ruth to bear witness to direct proof that the spaceship is a deception by opening the airlock. The moment demands Ruth confront her fear of catastrophe …

The Doctor and Sarah press Cho-Je by accusing Lupton of stealing the Metebelis crystal, only for Cho-Je to dismiss their claims with cold logic and temporal impossibilities. Barnes quietly exits, …

In a desperate attempt to unravel Lupton’s escalating scheme with the Metebelis crystal, Sarah seizes control of the unfolding crisis. She orders Tommy to find Mike Yates and deliver a …

Tommy stumbles into the sitting room, his usually scattered mind focused on a single urgent purpose. He repeatedly pushes past Mike’s dismissive demands to take him seriously, finally shouting that …

Moss reports that Lupton is missing from the retreat, with no traces in his room or meditation space. Tommy’s insistence on the cellar and mention of Sarah Jane Smith raise …

The Doctor and Harry enter the cryogenic chamber to find a massive dead alien organism lying mummified on the floor. They locate a revived human woman in a pod, Sarah, …

Commander Noah abruptly reports the Doctor has been neutralized during an apparent attempt to disable the satellite's power systems. The accusation erupts as Harry and the Doctor recover Sarah from …

The Doctor deduces the true nature of the alien threat in the cryogenic chamber, linking Harry’s missing companion Dune to the pulsating membrane and severed egg sac. The revelation exposes …

The Doctor descends the cliff to assist Zake but is ambushed by Erak and Krans who accuse him of murdering Zake. Before the Doctor can explain, Erak fires, wounding him. …

Erak and Krans drag the Doctor back to their camp and restrain him while unconscious. As he regains his senses, they cut the leg bindings but keep his hands bound …

In the desolate remains of what was once a GalSec camp, the Doctor faces Vural’s hostile questioning over how he arrived on Earth. The Doctor insists he used a transmat …

The Doctor materializes in the GalSec camp and immediately engages Vural with disarming logic, offering technology to escape the wasteland in exchange for assistance. Vural dismisses him as one of …

The Doctor, Sarah, and Roth examine the terrain where Harry vanished, piecing together clues that point to something far more sinister than Harry’s fall into a subsidence. The Doctor identifies …

The Doctor leads Harry and Sarah through a dense conifer plantation on Tullock Moor, his tartan scarf and tam-o'-shanter standing out against the oppressive greenery. Using his direction finder as …

Sarah abruptly disrupts the Doctor and Angus McRanald’s unsettling discussion at the Fox Inn, where the Doctor fiddles with a circuit board radio probe system while McRanald plays a lament …

Huckle's attempts to establish contact with the third rig are violently thwarted by escalating interference, culminating in a desperate distress call from the panicked third rig operator. The failed communication …

Professor Scarman’s ambition overrides his caution as he exposes the inner chamber of an untouched First Dynasty tomb. Ignoring Achmed’s terrified warnings, he pries open the sealed stones revealing the …

As Namin and Warlock argue over dark rituals tied to Sutekh, the tension erupts into chaos when a distant scream interrupts. Seizing the distraction, the Doctor and Sarah slip into …

Sarah witnesses and flees from a supernatural mummy-like figure in the woods, while the Doctor separately eludes the same threat. Their parallel encounters in the hollows reveal their difference in …

Laurence Scarman tenders the offer of police intervention after discovering the Doctor’s strange claims about temporal interference, only for the Time Lord to dismiss the suggestion outright. As Sarah Jane …

Leela is cornered by Commander Uvanov after discovering Cass’s corpse, his hand still bearing the telltale red dot that marks a robot’s intended target. Before Uvanov can exact brutal punishment, …

A silhouette clad in commander’s trousers appears on the ore deck and delivers a deactivation disc to a waiting robot. The robot immediately acknowledges its new directive, vowing to assassinate …

While Poul frees the Doctor and Leela from their bonds in the security storage, Zilda slips away to Uvanov's quarters. Ignoring the risk of discovery, she unlocks a private drawer …

The Doctor and Leela examine the storage locker where Chub’s murder occurred, reconstructing the events to test hypotheses about the killer’s identity and method. Poul provides sparse details that inadvertently …

Zilda seizes the ship’s intercom to expose Commander Uvanov’s murderous conspiracy after discovering damning evidence in his quarters. Her shattering accusation over the comms broadcasts his guilt to the entire …

The Doctor materializes the TARDIS beside the Thames in London’s East End, its foghorn drowning out a cryptic warning—a swamp creature’s distant cry that Leela correctly identifies as a ship’s …

Backstage in a narrow alley behind the theatre, Buller encounters the sinister dummy Sin brandishing a knife, marking the first violent encounter tied to Emma's disappearance. The Doctor and Leela …

Under the pretense of assisting the police with a recent disturbance, Li H'sen Chang enters the station in a calculated attempt to conceal his sinister identity. The Doctor, however, sees …

A violent encounter erupts when a Tong of the Black Scorpion enforcer ambushes the Doctor in the street with an axe, intent on silencing him before he unravels Li H'sen …

Leela takes command of the investigation after narrowly surviving the giant rats, pinpointing the enemy’s true location beneath the theatre. Her confession of failure to kill Weng-Chiang elevates the stakes, …

The Doctor abandons scholarly curiosity for urgent analysis as he examines Litefoot’s ancient Chinese cabinet, uncovering its lethal mechanisms of organic distillation that drain victims to dry husks. His deduction …

Chang escalates his deadly performance by forcing the Doctor to participate in dual illusions testing trust and life itself. The magician first tricks a real bullet through a card the …

Chang stages a deadly illusion using the Cabinet of Death, inviting Casey to assist, then activating the device’s lethal mechanisms. Casey collapses and dies instantly while Chang casually explains the …

Jago stumbles into the abandoned laboratory and views the horrors within not as evidence of monstrosity but as an opportunity for public spectacle and financial gain. His immediate calculation of …

The Doctor faces his death sentence from the Megara justice machines after breaking their compartment seals. He refuses to accept their predetermined judgment, demanding a trial and the right to …

Romana testifies as the Doctor’s first witness and reveals the dead travelers found encased in hyperspace capsules, introducing the possibility that living beings were once trapped in such vessels. Her …

The Doctor maneuvers Vivien Fay into revealing her identity before the Megara, exposing her ancient crimes. Romana intercepts the Doctor’s whisper and connects the presence of the Ogri to Vivien’s …

romana and emilia realize the stone circle’s ancient origins match the timeline of vivien fay’s arrival on earth. romana pieces together that fay followed a similar path to the doctor, …

Skagra confirms his forces are ready to unleash Salyavin’s power, his cold ambition crystallizing as the Doctor steps onto the command ship. The Krarg complete their assembly, binding his plan …

Skagra unveils his plan to fuse the entire universe into a single consciousness under his control, dismissing the Doctor's mockery with cold certainty. The Doctor's deflation of lesser motives—takeovers, conquest—only …

Skagra storms into Shada expecting to find Salyavin imprisoned, only to confront an empty cell. His expectation collapses into fury as he realizes the deception reaches beyond the prison. Chronotis’s …

The Doctor and Romana grapple with the crushing actuality of their entrapment in E-space after materializing from a harrowing journey. Romana’s persistent insistence that they are marooned forces the Doctor …

Trapped in the disorienting flux of E-space with the TARDIS lurching unpredictably, the Doctor and Romana face the grim reality of their isolation. Romana’s scanner confirms their bleak status as …

In the rebel cave, Tarak confesses he was a former Tower guard who recognized the ruling Lords’ faces from the Hydrax databank—a long-forgotten Earth expedition. His revelation exposes the Lords …

In the hidden heart of the Rebel's Cave, the Doctor and Romana stand at the nexus of oppression and rebellion. While Kalmar explains the depth of the Lords' tyranny, the …

The Doctor and Romana confront Zargo and Camilla in the State Room with escalating condescension, exposing the elite’s fragile hold on power through oblique challenges to their infallibility. When the …

Aukon claims Adric as the first of the Chosen Ones and whisks him away for initiation, forcing the Doctor and Romana to part ways. While they move into the rocket’s …

The Doctor and Romana descend deep into the abandoned fuel tanks of the Tower, seeking answers about its true function. The Doctor theorizes the tanks hold machinery powering the ruling …

The Doctor and Romana descend into the restricted lower levels of the Hydrax where archaic fuel tanks hum with unseen processes. Romana's practical observation about their location is cut short …

Todd demands clarity after his disturbing cave vision and Karuna’s surprising revelation that she embodies the late elder Panna, sharing the Kinda’s collective consciousness. As the Doctor pieces together that …

Sanders and Todd hunt Hindle through the control room, expecting a threat but finding only a cowering figure hidden in a cardboard box. When Hindle emerges in a staged scare, …

The Doctor seizes a moment of fragile hope as Aris approaches, revealing a risky countermeasure to the Mara’s growing influence. With Todd’s skepticism pressing, he translates ancient Kinda lore into …

Karuna reveals the full truth of the Mara’s origins as a temporal parasite, explaining how its curse binds time itself. The Doctor exposes the Mara’s lingering hold on Aris by …

Trapped in the candlelit cellar, the Doctor explains the presence of soliton gas, a telltale sign of the android’s lethal capabilities. As the companions scatter to search for an exit, …

The Doctor shatters Mace’s confidence in the face of overwhelming peril by identifying the cellar’s attacker as a mechanical android rather than a supernatural menace. When Mace, consumed by terror, …

In a tense confrontation inside the manor house, the Doctor attempts to prove the authenticity of an alien control bracelet to Mace, a skeptical highwayman resistant to the idea of …

The Terileptil Leader subjects Tegan and Adric to intense interrogation, probing for details about the Doctor's origins and knowledge. His menacing demeanor escalates as he declares his awareness of the …

The Terileptil Leader interrogates Adric and Tegan after capturing them in the control room. Adric reveals only the Doctor knows the TARDIS's location, frustrating the Leader’s immediate need for greater …

Chela seizes a rare moment alone with the Doctor to reveal the critical resonance between his warnings and the ancient Legend of the Return. She identifies the Great Crystal as …

The Doctor reveals a chilling truth about the ceremonial helmet’s design. While Ambril dismisses the legend’s inconsistency in counting six faces, the Doctor forces him to wear the headdress and …

Chela hands the Doctor a blue crystal known as the Little Mind's Eye, hinting at its connection to the Great Crystal and the ancient Snake Dancers. When pressed by the …

Under the weight of Manussa’s impending disaster the Doctor and Nyssa crawl through a lightless cavern, the air thick with the scent of ancient stone. Their lanterns throw trembling fingers …