下宿人, written by Marie Belloc Lowndes and first published in 1913, is a detective novel set in early 20th century London. The story follows the Bunting couple, Robert and Ellen, who turn their home into a boarding house amid financial struggles. Their lives take a dark turn with the arrival of a mysterious tenant, Mr. Sleuth, as the narrative intertwines with the infamous Jack the Ripper murders. The novel is notable for its exploration of desperation and the human condition against the backdrop of a notorious crime spree.
