Sarrasine is a novella written by Honoré de Balzac. It was published in 1830, and is part of his Human Comedy .
Around midnight during a ball the narrator is sitting at a window, out of sight, admiring the garden. He overhears the conversations of passers-by regarding the origins of the wealth of the mansion's owner, Monsieur de Lanty. There is also the presence of an unknown old man around the house, whom the family was oddly devoted to, and who frightened and intrigued the partygoers. When the man sits next to the narrator's guest, Beatrix Rochefide, she touches him, and the narrator rushes her out of the room. The narrator says he knows who the man is and says he will tell her his story the next evening....