Object
Rill Passageway Security Grill
A mechanical barrier in the Rill passageway, designed to seal off sections of the complex. Its sudden descent strands Vicki and forces the Doctor to abandon his initial plan, escalating the episode's tension.
2 appearances
Purpose
Block passage and separate individuals within the Rill structure
Significance
The grill's abrupt closure forces the Doctor to abandon physical rescue and target the Rills' air converter instead, thrusting Vicki into Chumblie custody and amplifying the stakes of his high-risk gambit against perceived Rill hostility.
Appearances in the Narrative
When this object appears and how it's used