One of the first full-length "locked-room" mystery novels - Published in 1891, The Big Bow Mystery by Israel Zangwill is widely recognized as one of the first full-length "locked-room" mystery novels, laying a foundation for a subgenre that would become a staple in detective fiction. Set in the fog-laden streets of London's East End, the story opens with the discovery of Arthur Constant, a beloved social reformer, found murdered in his locked bedroom. Inspector Grodman, a retired detective with a sharp eye and a keen mind, takes on the investigation, grappling with a case that defies logic and baffles even the most astute of observers. Zangwill deftly balances suspense with wit, providing a clever puzzle that keeps readers guessing until the surprising conclusion. Zangwill's novel is notable not only for its innovative plot but also for its social commentary, blending elements of satire with the mystery.