The Undercover Brothers continuity is the third and current Hardy Boys continuity. Frank and Joe Hardy are working for American Teens Against Crime (ATAC), a top secret government organization, that was co-founded by their father. The events of The Hardy Boys Undercover Brothers, The Hardy Boys Undercover Brothers Super Mystery series, Nancy Drew and the Hardy Boys Super Mystery series, The Hardy Boys Graphic Novel series, The Hardy Boys The New Case Files series, and a video game series based on the books, all take place in this continuity.