"The Lodger" is a classic mystery novel that will keep readers guessing until the very end. Set in London during the early 20th century, the novel tells the story of a mysterious lodger who takes up residence with a family in a quiet suburban home. When a series of gruesome murders occurs in the same neighborhood, the family begins to suspect that their lodger may be more than just an eccentric outsider. As tensions mount and suspicions grow, the family must confront the possibility that they are harboring a dangerous killer under their own roof.