The title of this book is Magic Tree House #39: Dark Day in the Deep Sea and is written by author Mary Pope Osborne. The book Magic Tree House #39: Dark Day in the Deep Sea is published by Random House Books for Young Readers. The ISBN of this book is 9781299116559 and the format is Digital (delivered electronically). The publisher has not provided a book description for Magic Tree House #39: Dark Day in the Deep Sea by Mary Pope Osborne.