Fabula
Season 21 · Episode 26
S21E26
Cynical with undercurrents of tragic weight and tentative hope
Written by Anthony Steven
View Graph

The Twin Dilemma Part 4

The Doctor and his companions must stop Lord Mestor's plan to use a Time Lord's knowledge and Jacondan technology to colonize the universe with genetically engineered slug eggs.

The Doctor, a Time Lord, and his companions Peri and Lang, find themselves on Jaconda, where they encounter Lord Mestor, who seeks to use the Doctor's knowledge to execute a plan to move planets into the same orbit as Jaconda. Mestor's goal is to colonize the universe using genetically engineered slug eggs that can survive extreme temperatures. The Doctor learns that Mestor plans to use a tractor beam to bring the planets into position and then use a mind-control device to take over the minds of key individuals. As the Doctor and his companions work to thwart Mestor's plan, they discover that Azmael, a Jacondan, has been working with Mestor but ultimately turns against him. The Doctor and his companions successfully stop Mestor's plan, but not before Azmael sacrifices himself to save the Doctor. The story concludes with the Doctor and his companions escaping Jaconda in the TARDIS, leaving Lang and the twins to rebuild on the planet.


Events in This Episode

The narrative beats that drive the story

34
Act 1

The narrative opens with Peri held captive, while Mestor dismisses Noma's suggestion to kill her, finding her 'pleasing.' He expresses concern about the Doctor's whereabouts, sensing danger. Meanwhile, the Doctor, wracked with guilt and rage over his recent regeneration, finds Lang recovering in the laboratory. Noma and guards apprehend the Doctor, despite Azmael's protests that the Doctor is a friend. Brought before Mestor, the Doctor discovers Peri is alive. He initially challenges Mestor's plan to move planets, calling it foolish and dangerous. However, the Doctor quickly shifts tactics, feigning cooperation by offering his 'empirical knowledge' to ensure the success of Mestor's ambitious project, implying the twins' mathematical skills alone are insufficient. Mestor, sensing the Doctor's truthfulness through his mind-link, questions his resistance. The Doctor attributes this to his secretive nature, wanting to remain valuable. The Chamberlain voices distrust, prompting Mestor to punish him with a painful green beam, showcasing his ruthless control. In the laboratory, the twins, Remus and Romulus, express discomfort over their missing memories. Azmael restores their full recollections by removing their wrist rings. Lang, still recovering, notes his own memory loss. Noma and guards return with the Doctor and Peri. The Doctor announces his agreement to help Mestor, which surprises Lang. The twins protest the interruptions to their work. The Doctor and Peri use Mestor's green ray punishment as leverage, threatening Noma with an 'embolism' to force her and the guards out of the laboratory, gaining a private space for their group. Mestor, back in the Throne Room, asks his Chamberlain about the Doctor, describing him as 'egocentric, wilful and quite mad' but also orders the TARDIS to be found, indicating his growing interest and suspicion. This act establishes Mestor's power, the Doctor's cunning, and the initial assembly of the resistance group, setting the stage for their counter-plan.

Act 2

In the laboratory, the Doctor, Peri, Lang, Azmael, and the twins begin to unravel Mestor's true intentions. The Doctor examines an orrery of the Jaconda system, questioning Mestor's method for stabilizing three planets in the same orbit, especially considering the immense gravitational pressures. Azmael explains Mestor's use of a tractor beam and a time-zone differential, allowing each planet to occupy the same space but be a day ahead of the other. The Doctor acknowledges the cleverness but, while meditating, realizes a critical flaw: the outer planets are smaller than Jaconda. If placed in Jaconda's orbit, their gravitational pull would be insufficient to maintain orbit, causing them to rapidly decay and crash into the sun, resulting in an enormous explosion. Azmael, shocked by his oversight, agrees with the Doctor's physics. Lang questions if Mestor knows this, and the Doctor confirms he does, implying a hidden motive. The Doctor instructs the group to continue calculations to avoid arousing Mestor's suspicions. Meanwhile, the Chamberlain locates the TARDIS, and Mestor orders his guards to enter it. The twins complete their calculations, but the group refuses to hand them over to Mestor. The Doctor, still seemingly distracted, wanders off mentally, prompting Peri's concern. He then investigates the hatchery, finding gastropod eggs that are unusually dry and rubbery. Using a laser cutter, he attempts to open an egg, but it proves incredibly tough, only reacting to the heat. Azmael realizes the implication: these eggs are designed to withstand extreme temperatures. The Doctor connects the dots, understanding Mestor's true, horrifying plan: not merely colonizing Jaconda, but using the exploding Jacondan sun to scatter these resilient slug eggs across the entire universe, ensuring widespread invasion. The twins express horror at their genius being abused. This revelation solidifies the group's resolve to stop Mestor, transforming their objective from local defense to universal salvation. Mestor, through his mind-link, senses the Doctor's full awareness of his plan.

Act 3

With Mestor's full plan exposed and their cover blown, the Doctor calls for immediate action. He instructs Lang to take Peri and the twins to the safety of the TARDIS, dealing with Noma and any guards if necessary, leveraging Lang's Interplanetary Pursuit Officer training. Azmael expresses doubts about their ability to confront Mestor, citing his own age, inability to regenerate, and the Doctor's mental instability. The Doctor, however, asserts his readiness, arguing it is better to die fighting than in fear. He orders the twins to destroy their calculations, which they do easily. Tragically, Drak suddenly collapses and dies, his mind burnt out, confirming Mestor has been using him as a monitor and knows everything. This forces the Doctor and Azmael to act swiftly. Lang clears the corridor, and the group splits, with Lang, Peri, and the twins heading for the TARDIS. The Doctor and Azmael proceed to confront Mestor. Noma, under Mestor's orders, pursues the fleeing group, intending to kill everyone but the twins. Peri and Lang become disoriented in the passageways but are eventually cornered by Noma and guards. The twins, knowing Mestor needs them alive, step forward, but Lang intervenes, disarming Noma and killing the guards, securing their escape. In the Throne Room, the Doctor confronts Mestor, attempting to disable him with a bottle of orange liquid, but Mestor's protective screen deflects it. Mestor, sensing Noma's defeat, taunts the Doctor. The Doctor warns Mestor about Lang's thirst for revenge. Mestor, infuriated, decides to possess the Doctor's mind and body. He demonstrates his power by enslaving Azmael. The Doctor challenges Mestor to try and possess him, but Azmael, weakening under Mestor's control, warns the Doctor that Mestor is overextending himself. Azmael urges the Doctor to destroy Mestor's physical body. The Doctor throws a second bottle, dissolving Mestor's slug-like form. However, Mestor's consciousness attempts to mind-link with the Doctor. Azmael prevents this by sacrificing himself, initiating a regeneration he knows he cannot complete, thereby destroying Mestor's consciousness within his own dying mind. Noma, sensing Mestor's death, screams. The Doctor mourns Azmael, his former teacher, who dies after a poignant farewell. Outside the TARDIS, Peri discovers the open door. Lang secures the TARDIS, confronting the Chamberlain and guards. The Doctor, finding Peri, dismisses the Chamberlain and initially intends to take the twins back to Earth, ignoring the plight of Jaconda's remaining populace. Lang, however, chooses to stay and help rebuild the planet, accepting Azmael's ring from the Doctor. The Doctor, Peri, and the twins depart in the TARDIS, leaving Lang to his new mission. Inside the TARDIS, Peri criticizes the Doctor's new, rude persona, but he defends his alien nature and stabilized state, asserting his identity as 'the Doctor.'