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You dive into the putrid water, stealing yourself for the ghastly swim you have decided to make. The oily scum fills your nose and mouth and chokes in your throat. You claw your way across the vault to the opposite tunnel and struggle onto a narrow walkway. You are trembling, but it is not the shock of the swim that has made you shiver. Your arm will not function. Your shoulder, wounded when the trapdoor grille fell, stings painfully, and the whole arm below it is numb and useless. Horror engulfs you as you realize what is wrong.
