The "The Puzzling Cases of Sherlock Holmes Vols 1&2" by Paul Elgood is a captivating series of books that combines puzzles and the iconic character of Sherlock Holmes. Written in English, these books offer a unique blend of intrigue and challenge for readers who enjoy puzzles and trivia. With each volume filled with puzzles related to Sherlock Holmes and his world, this series is sure to provide hours of entertainment and fun for fans of the genre. Signed by the author, these books make a special addition to any bookshelf for those who appreciate a good mystery and a clever puzzle.