The narrator married early and was happy with his wife and pet cat Pluto. He began drinking heavily and mistreating his animals and wife, eventually cutting out one of Pluto's eyes in a fit of rage. Later, a black cat with a white mark resembling a gallows is found. The narrator avoids the cat due to shame over abusing Pluto. When the police investigate after his wife's murder, the cat cries out from behind a wall, where the police discover it sitting on his wife's decapitated head.