Object
Chameleon Tours Office Gas Nozzles
Source of the earlier toxic attack in the Chameleon Tours office, hidden behind the seemingly solid wall. Their existence is cited as proof of the conspiracy by the Doctor, distinguishing them from mundane office furnishings.
2 appearances
Purpose
Releases toxic gas to incapacitate intruders probing the hidden door
Significance
Serves as crucial clue exposing the hidden door and antagonists' plot to silence investigators, driving tension between the Doctor's intuition and Jamie's skepticism
Appearances in the Narrative
When this object appears and how it's used