Doctor proposes high-voltage breach
Plot Beats
The narrative micro-steps within this event
The Doctor arrives at the heat barrier and analyzes its properties, demonstrating its impenetrability and then proposes a plan to the Brigadier involving high voltage electricity to breach it.
Who Was There
Characters present in this moment
Smug and triumphant—he believes he has the upper hand, but his overconfidence blinds him to the Doctor’s adaptability.
The Master, observing the helicopter crash from the churchyard, takes satisfaction in the Doctor’s near-defeat. Unaware of the Doctor’s new plan to breach the barrier, he continues his ritual preparations in the church cavern, confident that his supernatural and technological defenses are holding. His smugness contrasts with the Doctor’s scientific urgency, highlighting the clash between mysticism and reason.
- • Complete the Daemon Azal ritual to gain control over the village and beyond
- • Eliminate the Doctor and UNIT as obstacles to his domination
- • His supernatural and technological defenses are impenetrable
- • The Doctor is outmatched and will fail to stop him
Aggressive and determined—he’s focused on eliminating the Doctor and UNIT, but his overconfidence leads to his downfall.
Girton, the Master’s henchman, pilots the helicopter in an attempt to force the Doctor, Jo, and Yates into the heat barrier. After failing to make a sharp turn, his helicopter crashes, resulting in its destruction. His aggressive tactics reflect the Master’s ruthless strategy, but his failure creates an opening for the Doctor’s counterattack.
- • Force the Doctor and UNIT into the heat barrier to eliminate them
- • Support the Master’s ritual by removing obstacles
- • The Master’s plan is unstoppable
- • His skills as a pilot and enforcer are sufficient to overcome any resistance
Focused and determined, with a hint of urgency—his mind races to outmaneuver the Master’s trap, but he maintains a calm, authoritative demeanor to rally UNIT’s resources.
The Doctor, having just survived a violent helicopter ambush where Jo Grant was critically injured and the Brigadier’s helicopter was destroyed, immediately shifts focus to analyzing the heat barrier. He throws a small stone into the barrier to test its properties, then proposes a high-voltage solution using negative diathermy to disrupt its molecular structure. He directs the Brigadier to gather resources and assigns Sergeant Osgood to assist in constructing the device, demonstrating his improvisational genius and leadership under pressure.
- • Breach the heat barrier using scientific principles to stop the Master’s ritual
- • Protect Jo Grant and the UNIT team by neutralizing the immediate threat
- • The heat barrier is a scientific construct, not an insurmountable supernatural force
- • UNIT’s resources and expertise, when combined with his knowledge, can overcome any obstacle
Frustrated but pragmatic—he’s angry about the losses but understands that the Doctor’s plan may be their only chance to breach the barrier.
The Brigadier, frustrated by the loss of UNIT resources (including his helicopter) and initially skeptical of the Doctor’s scientific approach, reluctantly agrees to the high-voltage plan. He assigns Sergeant Osgood to assist, demonstrating his pragmatic leadership—though he resists the Doctor’s unorthodox methods, he recognizes the urgency of the situation and the need for action.
- • Breach the heat barrier to stop the Master’s ritual
- • Minimize further loss of UNIT resources and personnel
- • The Doctor’s scientific approach, though unconventional, may be their best hope
- • UNIT’s resources and expertise are critical to overcoming this threat
Skeptical but curious—he’s unsure if the plan will work, but he’s willing to give it a try under the Doctor’s guidance.
Sergeant Osgood, assigned by the Brigadier to collaborate with the Doctor, initially doubts the feasibility of the negative diathermy plan. However, he agrees to follow the Doctor’s instructions, demonstrating his dutiful nature and willingness to adapt to unconventional solutions when directed by a superior. His skepticism reflects UNIT’s military mindset, but he ultimately trusts the process.
- • Assist the Doctor in constructing the negative diathermy device
- • Ensure the device is built correctly and efficiently
- • The Doctor’s scientific knowledge, though unconventional, may hold the key to breaching the barrier
- • UNIT’s technical expertise is essential to making the plan work
Frightened and disoriented, but relieved to be in the Doctor’s care—her injury makes her a passive participant in this moment, but her well-being drives the urgency of the Doctor’s plan.
Jo Grant, still disoriented from her fall out of Bessie during the ambush, is lying injured on the ground. The Doctor reassures her before Captain Yates takes her to the pub for medical attention. Though physically vulnerable, her presence underscores the stakes of the Doctor’s plan—every moment counts to ensure her safety and stop the Master’s ritual.
- • Recover from her injury to rejoin the mission
- • Trust the Doctor and UNIT to handle the threat while she rests
- • The Doctor will find a way to stop the Master, even in the face of seemingly impossible obstacles
- • UNIT’s resources and the Doctor’s science are the key to overcoming the heat barrier
Objects Involved
Significant items in this scene
The small stone thrown by the Doctor into the heat barrier serves as a critical test of its properties. Its instant disintegration confirms the barrier’s lethal nature and molecular structure, providing empirical evidence that brute force (e.g., UNIT’s helicopters) cannot penetrate it. This simple object becomes the catalyst for the Doctor’s scientific proposal, shifting the focus from military tactics to innovative problem-solving.
Azal’s altar, though not physically present in this event, is implied as the Master’s ritual focal point. The Doctor’s urgency to breach the barrier stems from the need to stop the Master’s preparations at the altar, where he seeks to summon and control the Daemon. This object looms as the ultimate target of the Doctor’s plan, representing the supernatural threat that must be neutralized before it’s too late.
The Doctor’s proposed diothermic energy exchanger is the solution to breaching the heat barrier. Though not yet built, its concept is introduced here as the only device capable of disrupting the barrier’s molecular structure. The Brigadier assigns Sergeant Osgood to construct it, marking the shift from military tactics to scientific innovation. This object symbolizes the alliance between UNIT’s resources and the Doctor’s Time Lord ingenuity, embodying the hope of overcoming the Master’s defenses.
The Master’s heat barrier dome, a 10-mile-wide energy field, serves as the primary antagonist obstacle in this event. The Doctor tests its properties by throwing a small stone, which disintegrates instantly, confirming its lethal and impenetrable nature. This demonstration underscores the urgency of finding a scientific solution, as brute force (e.g., UNIT’s helicopters) has proven ineffective. The barrier’s existence drives the Doctor’s proposal to use negative diathermy, setting the stage for the technical challenge that follows.
The high-tension pylon cable, confirmed as immediately available by the Brigadier, is the physical link between the pylons and the Doctor’s proposed device. Its quick connection to the nearby high-tension pylons promises to channel raw electrical power directly to the experimental device, marking UNIT’s hasty but critical contribution to the plan. This cable symbolizes the alliance between UNIT’s logistical support and the Doctor’s scientific ingenuity.
The Brigadier’s UNIT helicopter, stolen and piloted by Girton, is destroyed in a crash after failing to force the Doctor into the heat barrier. Its explosion serves as a stark reminder of the Master’s lethal tactics and the high stakes of the confrontation. The wreckage also creates a sense of urgency, as UNIT loses a critical resource, reinforcing the need for the Doctor’s scientific solution.
Location Details
Places and their significance in this event
The heat barrier serves as the primary battleground and scientific challenge in this event. It is a dome-shaped energy field that incinerates anything that touches it, sealing Devil’s End and trapping UNIT inside. The Doctor swerves Bessie along its edge to evade Girton’s helicopter, and Jo tumbles out injured amid the wreckage. UNIT personnel cluster at its base, radios crackling as the Doctor outlines his high-voltage breach plan. The barrier’s oppressive presence drives the urgency of the moment, symbolizing the Master’s dominance and the need for a scientific solution.
The village pub serves as a safe haven for Jo Grant after her ejection from Bessie during Girton’s attack. The Doctor selects this nearby location for her medical treatment and rest, shielding her from the Master’s forces and the lethal heat barrier. Its stone walls and low ceilings enclose a space of forced calm, where medics tend to her wounds amid the hum of distant danger. The pub symbolizes the fragile sanctuary amid the chaos, a place where Jo can recover while the Doctor and UNIT devise their counterattack.
The churchyard serves as the Master’s observation point, where he stands amid shadowed tombs and takes satisfaction in the Doctor’s near-defeat. Smoke plumes rise from the helicopter crash, visible from this vantage, turning the sacred space into a symbol of chaos and unnatural tension. The Master’s presence here reinforces his role as the antagonist, watching the unfolding crisis with cold detachment while his forces execute his will.
Organizations Involved
Institutional presence and influence
The Master’s Faction, led by the Master himself, deploys henchmen like Girton for helicopter ambushes and animated enforcers like Bok to protect supernatural sites. In this event, Girton’s failed attack on the Doctor creates an opening for the Doctor’s countermeasure, while the Master’s ritual preparations in the church cavern continue unabated. The faction’s influence is felt through its aggressive tactics and the supernatural defenses (e.g., the heat barrier) that trap UNIT and the Doctor. Their power lies in the Master’s charisma, hypnosis, and control over ancient entities like the Daemon Azal, which he seeks to dominate.
UNIT (United Nations Intelligence Taskforce) plays a critical role in this event as the tactical and logistical backbone supporting the Doctor’s scientific solution. The Brigadier directs field officers like Captain Yates and Sergeant Osgood, coordinates rapid responses, and enforces military discipline under pressure. Though initially skeptical of the Doctor’s unorthodox methods, UNIT ultimately provides the resources (e.g., high-tension cables, technical expertise) necessary to construct the negative diathermy device. Their collaboration with the Doctor marks a turning point, where brute force gives way to scientific precision in the fight against the Master’s escalating threat.
Narrative Connections
How this event relates to others in the story
"Girton's actions of taking the helicopter culminates in Girton attacking the Doctor and Jo with helicopter. Demonstrating The Master's power is willing to go."
Girton overpowers Yates and escapes"After getting instructions from The Master, Girton commandeers a helicopter and carries out an assassination attempt on The DOCTOR and Jo. Showing that The Master is attempting to kill those who would stop his plans."
Master crushes defiance with Bok’s terror"After getting instructions from The Master, Girton commandeers a helicopter and carries out an assassination attempt on The DOCTOR and Jo. Showing that The Master is attempting to kill those who would stop his plans."
Master asserts dominance through terror"Jo gets injured during the attack, recovers and has a premonition. This pushes Jo to the point where she warns of a loming danger in the cavern."
Jo’s Sedation and Ignored Warning"Jo gets injured during the attack, recovers and has a premonition. This pushes Jo to the point where she warns of a loming danger in the cavern."
Jo’s Sedation and Dismissed WarningKey Dialogue
"BRIGADIER: Twenty thousand pounds of UNIT money gone up in a puff of smoke. DOCTOR: You've got the mind of an accountant, Lethbridge Stewart. So, this is your heat barrier, is it?"
"DOCTOR: We'll need at least ten thousand volts to get through this lot. BRIGADIER: All right, I'll lay things on. DOCTOR: Good. Only please hurry, we may have very little time left."
"OSGOOD: What's the principle, sir? DOCTOR: Negative diathermy, Sergeant. Buffer the molecular movement of the air with the reverse phase short waves. It's quite simple. OSGOOD: Simple? It's impossible. DOCTOR: Yes, well, according to classical aerodynamics, it's impossible for a bumblebee to fly!"