Fang Rock Lighthouse Compass

A small handheld compass with a metallic casing and polished glass face, its needle spinning wildly when exposed to the strong electrical field emanating from Fang Rock’s shoreline. The Doctor uses it to detect the lethal energy pulsating through the rock’s phosphorescent glow, identifying its unnatural origin. Leela watches as the compass becomes a diagnostic tool, confirming the field’s intensity and proximity before the Doctor theorizes its cunning, predatory nature.

2 appearances

Appearances in the Narrative

When this object appears and how it's used

2 moments

S15E2 · Horror of Fang Rock Part 2

Doctor discovers dangerous alien energy

The Doctor places the Fang Rock Lighthouse Compass on a rock to measure the electrical field’s intensity. Its needle spins wildly, confirming the lethal energy’s unnatural origin and directly informing his theory that the field belongs to a sentient predator.

Before: The compass is in the Doctor’s possession, unused and in normal working condition.

After: The compass remains in the Doctor’s possession, its needle still spinning erratically from the electrical interference as they leave.

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S15E2 · Horror of Fang Rock Part 2

Green light reveals lurking horror

The compass becomes a diagnostic tool in the Doctor’s hands, its needle spinning wildly in response to the shoreline’s electrical field. Its reading confirms his theory of a lethal, concentrated energy source directly beneath them, guiding their decision to flee before the glow exposes their position.

Before: Resting quietly on a rock, its needle stable despite the surrounding phosphorescent hints.

After: Still spinning erratically in the Doctor’s grip as they prepare to leave, its purpose fulfilled for now.

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