Rex Todhunter Stout (1886 - 1975) was an American crime writer, best known as the creator of the larger-than-life fictional detective Nero Wolfe and assistant Archie Goodwin. The Nero Wolfe corpus was nominated Best Mystery Series of the Century at Bouchercon 2000, the world's largest mystery convention, and Rex Stout was nominated Best Mystery Writer of the Century. Rex passed away in 1975.

In the shadowy stairwell of a New York City brownstone, a man stealthily begins to climb. In the pocket of his coat, a loaded revolver. At the top of the stairs, a woman he intends to kill. But who?