"Isle of the Lost" is the first book in the popular "Descendants" novel series by Melissa De La Cruz. Published by Random House Children's Books in 2017, this juvenile fiction novel follows the story of a young girl who discovers she is a descendant of a magical island. The book explores themes of love, romance, adventure, and social values, making it a captivating read for young readers. With a trade paperback format and 336 pages, this novel is sure to entertain and inspire readers to explore the magical world of the Descendants.