Doctor Who
Object

Gas Shell

Artillery projectile responsible for initiating the poison gas attack in Skaro's trenches, directly causing the chaos that leads to the Doctor's group being separated.
2 appearances

Purpose

Deploys poison gas through artillery explosion to attack enemies.

Significance

Sparks gas attack that fractures the group—Doctor and Harry captured by Kaled soldiers, Sarah isolated—escalating mission stakes amid war's brutality.

Appearances in the Narrative

When this object appears and how it's used

2 moments
S12E11 · Genesis of the Daleks Part 1
The Door to Davros: War’s Hidden Vein

The gas shell explodes nearby, unleashing poison gas that forces the Doctor, Sarah, and Harry to scavenge respirators from the propped-up corpses. The gas attack creates chaos, disrupting their exploration of the locked door and setting the stage for the ragtag militiamen’s ambush. Its sudden detonation heightens the tension and desperation of the scene, underscoring the trenches’ lethal environment and the constant threat of death.

Before: Armed and ready to be deployed by Kaled forces, likely as a tactical weapon to clear the trenches of intruders or enemies.
After: Detonated, filling the trench with poison gas and forcing the group to act quickly to survive.
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S12E11 · Genesis of the Daleks Part 1
The Gas Shell Gambit: Separation and Capture in the Trenches

The gas shell explodes nearby, unleashing poison gas that forces the Doctor, Sarah, and Harry to scavenge respirators from the corpses. This sudden threat disrupts their exploration of the service tunnel and creates chaos, during which the ragtag militia ambushes them. The gas shell thus acts as a catalyst for the group’s fragmentation and the subsequent capture of the Doctor and Harry by Kaled soldiers.

Before: A live gas shell, likely fired by Kaled or Thal forces, approaching the trench where the group is located.
After: The gas shell has detonated, filling the trench with toxic fumes. The group has secured respirators, but the chaos has led to their separation and the capture of the Doctor and Harry.
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