Marker, an elderly maid, replies, "No, sir, it is a Chubb's key." In both of these stories, the description makes clear that the lock could not have been picked, a minor clue in solving each mystery. In R. Austin Freeman's The Penrose Mystery, Dr. Thorndyke says: “Burglars don’t try to pick Chubb locks.” A Chubb lock is featured in the novel Neuromancer by William Gibson. Sarah MacLean's Wicked and the Wallflower, set in 1837, has a Chubb lock on the door of the Bareknuckles Bastard's smuggling warehouse. Lady Felicity Faircloth cannot pick it on her first attempt. References Locks (security device)