Fabula
Object
Object

Stolen Microthermistor

A compact scientific device roughly the size of a handheld scanner, its smooth metal casing etched with faint circuitry that pulses with cool blue light during activation. The Rani wields it as a bargaining chip, its precise function unknown but clearly potent enough to demand the Doctor’s compliance. Characters handle it with urgency—Faroon delivers it as part of a cruel exchange, while the Doctor clutches it before reluctantly surrendering it. A thin data cord trails from its base, suggesting connectivity to larger systems.
3 appearances

Appearances in the Narrative

When this object appears and how it's used

3 moments
S24E3 · Time and the Rani Part 3
Rani sentences Mel to Tetrap custody

The stolen Microthermistor acts as the Doctor’s bargaining chip in a cruel transaction, surrendered indirectly to the Rani’s forces through Ikona and Mel. Its compact, advanced nature makes it a potent leverage point in the Rani’s schemes.

Before: In the Doctor’s possession, used to prevent discovery
After: Delivered to the Rani’s representatives, fulfilling the exchange demanded
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S24E3 · Time and the Rani Part 3
Doctor flees as insects swarm Genius Room

The microthermistor becomes a high-stakes bargaining chip in the Doctor’s negotiation for Mel’s safety. Held first by Ikona, it is placed on the boulder and then taken by Urak, symbolizing mutual coercion and the precarious balance of power.

Before: In the Doctor’s possession, a stolen component vital to the Rani’s machine
After: Transferred to Urak as part of the negotiated exchange, now in Rani’s hands
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S24E3 · Time and the Rani Part 3
Rani arms her machine with the Doctor’s biology

The microthermistor, secured earlier by the Doctor, is delivered by Faroon to the Rani’s forces as a bargaining token in exchange for Mel’s return. Though its small size conceals unstable temporal potential, the Rani exploits its symbolic value—her leverage hinges not on the device’s power but on the Doctor’s attachment to securing Mel’s safety.

Before: In the Doctor’s possession as a safeguard against Rani tactics
After: Handed to Ikona as part of the exchange, its electronic pulse contained within the boulder’s neutral zone
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