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Object

Doctor's War Machine Magnetic Field Trap (Targeting Electromagnetic Control System)

A magnetic field trap designed by the Doctor to neutralize the War Machine (WM9) by targeting its central electromagnetic control system (its 'nervous system'). Consists of four cables arranged in a square formation on the street, generating a 20-foot radius magnetic field to paralyze the War Machine once it enters the trap. The trap requires precise timing for activation, with the Doctor initially attempting to connect the final cable himself before Ben intervenes to complete the setup. The equipment for this trap was requested from Summer at Covent Garden Market, and the trap demands powerful equipment and strategic roadblocks to herd the War Machine into position. Summer protested the lethal risk involved, highlighting the high-stakes nature of the operation.
11 appearances

Purpose

Neutralize War Machine by trapping it in a magnetic field

Significance

Anchors Doctor's urgent counterplan to WOTAN's rampage, exposes rifts between his daring and allies' caution, cements Ben's protective bond, and raises stakes for London's survival

Appearances in the Narrative

When this object appears and how it's used

11 moments
S3E45 · The War Machines Episode 4
Police Warn of War Machine Invasion

The Doctor’s magnetic field trap is the centerpiece of this event, both literally and thematically. Though not yet fully assembled in this moment, the Doctor sketches its design—a four-cable square box that will generate a magnetic field to paralyze a War Machine within a 20-foot radius. The trap is a testament to the Doctor’s ingenuity, a high-stakes gamble that hinges on precise timing and execution. The plan is explained in detail: three cables are set up first, luring the War Machine into position, while the fourth cable—the most dangerous to connect—must be activated at the critical moment. The trap is not just a physical object; it’s a symbol of human resistance against WOTAN’s machinery, a fragile but hopeful countermeasure in the face of overwhelming odds. Its success or failure will determine whether London stands or falls.

Before: In the planning stages—sketched out by the Doctor as a theoretical solution. The cables and equipment required for the trap are not yet assembled, but the Doctor’s explanation brings them to life as a tangible strategy. The trap exists in this moment as an idea, a blueprint for action that must be executed flawlessly.
After: Transitioning from concept to reality. The Doctor’s explanation sets the plan in motion, and the next steps (preparing the three cables, luring the War Machine, and connecting the fourth cable) are now imminent. The trap’s status shifts from abstract to imminent, its success or failure hanging in the balance of the characters’ actions.
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