Doctor Who
Object

Eldrad's Alien Hand

A severed, silicon-based hand pulsating with Eldrad's bioluminescent energy, its crystalline veins flexing against the transparent walls of its containment box. The hand regenerates tissue when exposed to radiation, absorbing it as humans do oxygen, turning Driscoll’s skin translucent where the artifact’s influence courses through him. Condensation beads along the acrylic box’s edges reveal thermal unevenness as the alien limb fights to break free, its movements generating rhythmic knocking from within the contamination safe.
8 appearances

Purpose

To serve as a conduit for Eldrad’s residual power and regenerative abilities after the Time Lord’s death, capable of absorbing radiation to sustain Eldrad’s existence and communicate across time.

Significance

The central catalyst for the crisis, driving character corruption (Carter’s suicide, Driscoll’s transformation), nuclear sabotage threats, and forcing the Doctor to confront Eldrad’s lingering influence—finally resolved when the Doctor destroys the Hand to prevent a meltdown.

Appearances in the Narrative

When this object appears and how it's used

8 moments
S14E5 · The Hand of Fear Part 1
Scientists unravel alien hand's regenerative horror

The containment box is used to temporarily secure the alien hand during transfer from the quarry to the hospital pathology lab. Sarah Jane pries it open with a scalpel and inserts the hand inside before fleeing, transforming the box into both prison and vessel for the artifact’s power.

Before: Sealed and containing the alien hand after its transfer from the quarry
After: Forcibly opened by Sarah Jane, now housing the reactivated artifact as she escapes
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S14E5 · The Hand of Fear Part 1
Sarah Jane claims the alien hand

The alien hand containment box serves as the artifact’s immediate container until Sarah Jane pries it open and reclaims the hand within. It enables the transfer of the hand from the electron microscope workspace to Sarah’s hidden possession, where it becomes a conduit for psychic domination and flight.

Before: Sealed containment box containing the alien hand, stored on the pathology lab bench adjacent to the electron microscope.
After: Pried open by Sarah Jane using a lab scalpel; the hand removed and clutched by her, no longer contained.
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S14E6 · The Hand of Fear Part 2
Doctor detects radiation absence on Sarah

The alien Hand is referenced obliquely by the Doctor as the source behind the anomalies—its ability to absorb radiation explains Sarah’s survival and Carter’s death. Although unseen, its presence looms over the conversation, tying the reactor crisis to extraterrestrial forces and shifting blame from human agency.

Before: Recovered from the quarry and brought into containment under analysis
After: Still contained but increasingly active, presumably absorbing background radiation in the facility
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S14E6 · The Hand of Fear Part 2
Radiation secrets and Eldrad's corruption revealed

The Doctor references the alien Hand discovered in the quarry as the source of supernatural influence corrupting both Sarah and Carter. Its containment and regenerative properties are briefly mentioned, establishing it as the cause of the events leading to Carter's death and Sarah's amnesiac sabotage.

Before: Contained in a sealed box, its silicon-based tissues regenerating by absorbing radiation, attempting to reach the reactor to restore Eldrad.
After: Still actively attempting to break free, its movements generating rhythmic knocking in its containment, signaling an escalating supernatural threat the Doctor and others cannot ignore.
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S14E6 · The Hand of Fear Part 2
Doctor warns Watson of Eldrad's regenerative power

The Doctor and Watson examine the Hand, now confirmed to be a living, regenerating silicon-based limb that absorbs radiation as if it were oxygen, leaving Sarah unharmed but revealing a cosmic threat beyond human control.

Before: Contained in the reactor area, glowing faintly with absorbed radiation and showing signs of minor regeneration.
After: Securely placed into a tupperware box by Driscoll, though still pulsating with latent energy.
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S14E6 · The Hand of Fear Part 2
Driscoll’s hand touched Eldrad’s Hand

Driscoll uses tongs to pick up Eldrad's severed hand from the floor, examining its silicon-based structure before placing it inside a sealed Tupperware box. Though not fully understood, the Hand's regenerative and radiation-absorbent properties are central to the Doctor’s caution.

Before: Lying on the contaminated floor near the reactor, pulsating with bioluminescent energy
After: Sealed in a Tupperware box carried toward the decontamination room
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S14E6 · The Hand of Fear Part 2
Doctor interrogates Sarah while Driscoll acts

The Doctor uses his observation of the Geiger counter’s silence to deduce the Hand’s absorption of radiation, enabling him to reveal its regenerative tissue-building capacity. This revelation exposes the Hand’s hidden lethality, shifting the crisis from contamination to potential surreptitious energy siphoning by Eldrad’s artifact.

Before: The Geiger counter registers no radiation from the Hand despite expectations.
After: The Doctor declares the Hand absorbs radiation to regenerate, explaining the counter’s anomaly.
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S14E6 · The Hand of Fear Part 2
Doctor asserts control as Hand threat grows

The Hand of Eldrad drives the crisis by emanating knocking sounds from within the contamination safe, a sign of its growing regenerative strength. The Doctor identifies this as evidence of escalating threat, contradicting Watson’s assumption of harmless containment.

Before: Sealed within the safe, regenerating tissue from background radiation but presumably dormant
After: Actively knocking, demonstrating increasing regeneration and potential for breach
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