John Dunning (1942–2023) revealed book collecting’s most shocking secrets in his bestselling series of crime novels featuring Cliff Janeway: Booked to Die, which won the prestigious Nero Wolfe Award; The Bookman’s Wake, a New York Times Notable Book; and the New York Times bestsellers The Bookman’s Promise, The Sign of the Book, and The Bookwoman’s Last Fling. He also wrote the Edgar Award–nominated Deadline, The Holland Suggestions, and Two O’Clock, Eastern Wartime. An expert on rare and collectible books, he owned the Old Algonquin Bookstore in Denver for many years.