This book isn't some snotty deep elitist pseudo-intellectual tome written by people who are ashamed to read or write about mystery fiction but know there's money in it. No, it's a series of very short appreciations of 100 different fictional detectives, some well known and some now quite obscure, by mystery writers who love the genre and know what they're talking about. Worth reading just for the 1990 letter from Lord Peter Wimsey's granddaughter. Can be dipped into or read cover to cover, depending onyour inclination. I didn't agree with several of the comments, but it was clear they had come from people who had read the books and not just skimmed the blurbs.