Marie Belloc Lowndes 
The Lodger 

Somewhere in London a madman was at large. And then one night there came a knock at the door of a quiet lodging house in the Marylebone Road. . . . This novel, based on the Jack the Ripper murders, was made into a film by Alfred Hitchcock. Marie Belloc Lowndes (5 August 1868 – 14 November 1947), was a prolific English novelist. Active from 1898 until her death, she had a literary reputation for combining exciting incidents with psychological interest. Three of her works were adapted for the screen: The Lodger (1913 novel; numerous film adaptations), Letty Lynton (1931 novel; 1932 film adaptation), and The Story of Ivy (1927 novel; 1947 film adaptation). Additionally, The Lodger was adapted as a 1940 radio drama and 1960 opera.