Bloodhounds (Peter Diamond #4) [J0184]

2004 - PB With minor wear. A rare stamp and a corpse are discovered in Bath within hours of each other. As he investigates, Inspector Peter Diamond discovers that both the person who found the stamp and the victim belong to the Bloodhounds, an elite group of mystery lovers, who now urge Diamond to bring the murderer to justice. But there's a hitch: the body lies inside a padlocked houseboat and the only key is in the pocket of a man with an airtight alibi.

From recent-ish Amazon/GoodReads reviews: "Here we have a group of crime fiction afficionados who meet to discuss their favourite books, suddenly plunged into a locked room mystery - yes we hear all about that chapter from The Hollow Man, of course we do. Still, good story, fun mystery."; "This book is for all lovers of locked-room mysteries, thrillers, true crime, detective stories, and more. Author Peter Lovesey pays homage to all stories in this genre."; "Diamond is a great character you can't help liking. There's a locked room mystery and two murders to solve and plenty of possible suspects. A really good read.", "Murder mystery book club! Riddles! Locked room mystery! So much fun in this one, and it has a few nice twists as well."