Chris Rylander

Chris Rylander is the author of the Fourth Stall saga and the Epic Series of Failures trilogy, as well as Codename Zero and its sequels. A fan of baseball, statistics, and baseball statistics, he lives with his family in Chicago. You can visit him online at www.chrisrylander.com.

Dan Gutman is the New York Times bestselling author of the Genius Files series; 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 12 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.