The Adventure of the Speckled Band

By the light of the corridor- lamp I saw my sister appear at the opening, her face blanched wiht terror, her hands groping for help, her whole figure swaying to and fro like that of a drunkard. I ran to her and threw my arms round her, but at that moment her knees seemed to give way and she fell to the ground. She writhed as one who is in terrible pain, and her limbs were dreadfully convulsed.