Object
Master's Skull Cap
Critical neural interface worn by the Master, enabling direct control of the White Robots' destructor beams. Its destruction in The Mind Robber Part 5 halts the robots' attack and renders the Master unconscious.
6 appearances
Purpose
Neural control interface linking the Master's mind to the Master Brain
Significance
Central vulnerability the Doctor exploits to collapse the Master and freeze the robots, shifting power from execution threat to group escape with the unconscious captor
Appearances in the Narrative
When this object appears and how it's used