The Doctor versus the Brigadier: Philosophical disagreement over methods – science/diplomacy versus military force.

In the conference room, the Brigadier interrogates Liz about the Doctor’s unauthorized investigation of the caves, revealing his growing frustration with the Doctor’s refusal to share critical information. The Brigadier …

In the claustrophobic cave tunnels, Major Baker—acting on his own initiative—spots a shadowy figure and fires a warning shot, believing it to be a human intruder. The figure staggers but …