Jeff Knurek is an award-winning toy, puzzle, and game inventor; a consumer product developer; a graphic artist; and an illustrator. He has illustrated the cartoons for the Jumble® word puzzle since 2008 and is the creator of Family Fun magazine’s Toy of the Year award winners Monster Under My Bed and What’s In Ned’s Head? He lives in Fishers, Indiana. Theodore Pappas is the executive editor of Encyclopaedia Britannica. He has written for numerous publications, including the American Scholar, Chicago Tribune Sunday Magazine, London Spectator, and the New York Post. He has made repeat appearances on the Today Show’s weekly Who Knew? quiz segment, Michael Feldman’s Whad‘Ya Know? radio quiz show, and trained contestants for the Who Wants to Be a Millionaire? television show. He lives in Chicago.