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Object

Psychospores Tracking Device

The psychospores appear as fine, glowing particles scattered through the air in Nimon’s laboratory, clinging to surfaces and reacting to electromagnetic fields. When exposed to K9’s whine after the Doctor summons him, the spores coalesce toward the device’s transmission core, mapping its structure with eerie precision. Their luminescent trails trace the energy pathways of the hymetusite-fueled circuit, revealing how the Nimon’s positronic machine converts raw power into focused control.
2 appearances

Appearances in the Narrative

When this object appears and how it's used

2 moments
S17E19 · The Horns of Nimon Part 3
Doctor and Romana uncover Nimon weapon secrets

The psychospores, invisible yet detectable by K9’s sensors, act as tracer particles that react to electromagnetic fields in the laboratory. As the Doctor prepares to summon K9, these spores become the navigational pathway, allowing K9 to map the energy vectors of the positronic circuit and locate the Doctor’s precise position among the lab’s shifting terrain.

Before: Scattered throughout the laboratory air, clinging to surfaces and reacting subtly to energy flows.
After: Actively coalescing toward K9’s transmission core as he approaches, enabling precision navigation.
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S17E19 · The Horns of Nimon Part 3
Doctor summons K9 to analyze Nimon device

K9 tracks the team using psychospores, fine luminous particles suspended in the laboratory’s air. These spores serve as an invisible trail, allowing K9 to plot a direct route to the Doctor and Romana. Their presence highlights the laboratory’s alien biology and enables the Doctor’s strategic reliance on K9’s navigational capabilities.

Before: Suspended in the laboratory atmosphere, reacting subtly to electromagnetic fields and bodily motion
After: Actively coalescing toward K9’s transmission core as the robotic ally homes in on the team’s location
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