RON ROY has been writing books for children since 1974. He is the author of dozens of books, including the popular A to Z Mysteries®, Calendar Mysteries, and Capital Mysteries. When not working on a new book, Ron likes to teach tricks to his dog Pal, play poker with friends, travel, and read thrilling mystery books.

STEPHEN GILPIN is the award-winning illustrator of dozens of children's books, including the popular and very funny Pirate Mom. He brings his fresh, kid-friendly style to all the covers of the A to Z Mysteries® series.

While picnicking on Squaw Island, Dink, Josh, and Ruth Rose find a hundred dollar bill, and when they return to explore further they find an entire cave full of money.