Bk16 of my ongoing #BookMail is this gorgeous edition. NYC, bookseller Cassie Andrews is given a gift by a fave customer, a book full of strange writings & drawings.In front is a handwritten message to Cassie telling her this is the Book of Doors & that any door is every door. It gives who possess it extraordinary powers. Cassie & her bf Izzy are swept away by what it can do, but it‘s not the only magical book & dangerous people want what she has.