Dan Gutman is the New York Times bestselling author of the Genius Files series. He is also the author of the Baseball Card Adventure series, which has sold more than 1.5 million copies around the world, and the My Weird School series, which has sold more than 10 million copies.

Thanks to his many fans who voted in their classrooms, Dan has received nineteen state book awards and ninety-two state book award nominations. He lives in New York City with his wife, Nina. You can visit him online at www.dangutman.com.