Clue

On the morning of her wedding, Madeleine Van Norman lies dead in her locked bedroom. A blood-stained letter opener rests beside her. A note suggests suicide. But the door was locked from within, the windows sealed, and the household is full of people with reasons to want a wealthy heiress dead. Enter Fleming Stone, Carolyn Wells' brilliant detective, who must unravel a puzzle that seems impossible: how did the killer enter a sealed room? The answer lies in a single, carefully hidden clue that flips everything you think you know. Wells wrote this in 1909, cementing the locked-room mystery as a genre fixture and inspiring the board game that shares its name. For readers who love golden age puzzles, this is a compact, clever showcase of the form.