Fabula
Object
Object

Doctor's Biological Barrier

A defensive force field generated by the Doctor, designed to obstruct detection by impeding biological readings. Stor's instruments fail to trace human life forms behind this barrier, frustrating immediate Sontaran attempts to penetrate the TARDIS. The barrier manifests not as a visible force but as a functional blockade, detectable only by its power source—the ancillary generator powering its biological dampening effects.
1 appearances

Appearances in the Narrative

When this object appears and how it's used

1 moments
S15E26 · The Invasion of Time Part 6
Sontarans uncover TARDIS vulnerability

The Doctor’s biological barrier blocks direct biological detection by Sontaran sensors, forcing Stor to abandon immediate frontal assaults. Kelner recognizes the barrier’s power source—the ancillary generator—as a critical vulnerability, proposing its detection as the key to a new infiltration route.

Before: Operational defensive force field within the TARDIS service passage, undetected in function but disrupting Sontaran operations.
After: Status unchanged but direct relevance elevated as the Sontarans pivot to targeting its power source.
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