During his birthday celebration, Socrates mysteriously disappears. Brisco, Bowler and Whip follow the trail to the strange town of Midnightville. They found out that Socrates was a lawyer there, and one case he took was of the local undertaker, Donald Grayson, who was executed for killing his wife. The trio take up residence at the daughter's boarding house, and try to locate Socrates. However, other folks who participated in the trial are being found dead, murdered in grisly manners. Ultimately they discover that the daughter Diana is the one responsible: she was the one who shot her mother, and her father took the blame. Diana is now schizophrenic, and assumes the role of her father to gain revenge on those she holds responsible for his death. She is captured and locked up.