This hardcover book is a must-have for fans of the Invisible Sun RPG. Written by Shanna Germain and Monte Cook, this book is a valuable addition to any collection. It was published in 2019 by Cook Games, LLC and Monté. The book is written in English and covers a wide range of topics related to the game. It is perfect for those who want to enhance their gaming experience. The book title is "Book M" and it falls under the category of Books and Magazines. Get your hands on this amazing piece of literature today!