"Shadow of the Shark" is a paperback book from the Magic Tree House Merlin Mission Series by Mary Pope Osborne. This juvenile fiction novel, published by Random House Children's Books in 2017, features illustrations by Sal Murdocca. The book is written in English and covers topics such as time travel, fantasy, and adventure, with a focus on people and places in Mexico and the Caribbean. With a total of 144 pages, this book is sure to captivate young readers with its engaging story and colorful illustrations.