Master's Sleep Gas

The Master releases this invisible sleep gas inside his TARDIS, knocking out the Doctor and Jo Grant in seconds. It renders them helpless without lasting harm, allowing him to bind and position them. He later revives them, exploiting their groggy state to demand cooperation.

1 appearances

Purpose

Non-lethally incapacitate targets for capture and control

Significance

Gives the Master immediate control, turning Jo's vulnerability into leverage that forces the Doctor's compliance toward the Primitive city.

Appearances in the Narrative

When this object appears and how it's used

1 moments

S8E19 · Colony In Space Part 5

Master blackmails Doctor with Jo hostage

The sleep gas is the Master’s weapon of choice to neutralize the Doctor and Jo, rendering them helpless without lasting harm. Its deployment is a calculated move, demonstrating the Master’s preference for non-lethal but effective tactics. The gas’s invisible nature makes it a stealthy tool, reinforcing the Master’s ability to strike unseen. The Doctor’s immediate concern upon waking—‘What have you done to her?’—highlights the gas’s role as both a physical and psychological threat.

Before: Deployed earlier to incapacitate the Doctor and Jo, now dissipated but still a looming threat.

After: No longer active in the immediate space, but its effects (Jo’s unconscious state) persist as leverage.

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