Doctor frees Bellal from alien control

The Doctor activates the sonic screwdriver to analyze the pulsing light’s effect on Bellal, helping him decode the city’s trap. Later, he uses it to switch off the device once the danger passes, restoring calm and demonstrating its role as a diagnostic and stabilizing tool in alien environments.

The city’s pulsating light intensifies around Bellal as he reaches upward, manifesting a hallucinogenic effect that hijacks his motor control. The light reacts to his touch and gaze, shifting in frequency and intensity to trigger the trance, serving as both trap and test of comprehension.

Bellal seizes the captured Dalek suppression weapon under psychic compulsion, pointing it at the Doctor with intent to fire. The Doctor immediately disarms him, pulling the gun from his hand and taking possession to prevent catastrophe. The object’s latent Dalek energy responds to the city’s pressure, revealing its dangerous sentience.

This chamber, designed as a cognitive trial, tightens its grip as the Doctor and Bellal reach a dead end. The pulsing light and shifting walls reflect the city’s sentience, which amplifies Bellal’s memories and fears. A hidden console or symbol array detects their presence, triggering the illusory threat that nearly costs them their alliance. The room's ambiance tests not only survival but psychological endurance.

The Dalek Military Command is indirectly represented through the alien gun Bellal wields under compulsion. Though no Dalek presence is observed during the event, the weapon’s origin signifies the organization’s ongoing strategic influence over Exxilon. The room functions as a secondary control point in their campaign to neutralize local resistance and exploit planetary resources.