Arthur Terrall's agonizing struggle against the Daleks' mental control, as they try to use him for their nefarious schemes.

The Doctor, sensing Terrall’s evasive behavior, tests his suspicions by offering food and drink—gestures Terrall repeatedly refuses. When Terrall takes a sword from the wall, the Doctor seizes the opportunity …

Jamie, driven by his protective instinct for Victoria, engages Terrall in a sword duel after discovering him in the trophy room. The fight escalates until Terrall suddenly collapses mid-strike, writhing …