The product is a lot of 20 hardback books from the Patchwork Mysteries series, volumes 4-23, published by Guideposts. These mystery books are intended for young adults and adults, with the original language being English. The author of the books is listed as Guideposts and Various Various. The genre of the books falls under mystery, and the topic is books. This collection of books offers a series of intriguing mysteries for readers to enjoy and solve.