**"When I'm faced with a Pilkey fan looking to branch out, this graphic novel is the first book I reach for." -The New York Times With more than four million copies in print, #1 New York Times-bestselling author John Patrick Green's goofy graphic novel series is a colossal comics hit! Join super spy alligator duo MANGO and BRASH as they surf the sewers and fight the forces of evil.** Special agents Mango and Brash are asking their readers for help in cracking the case! The gators have been given a brand new add-on for their V.E.S.T.s to help with gathering evidence and making sense of clues – the G.R.I.D. (Gator Reasoning, Inquiry, Deduction) – and with that powerful tool in hand, kids can follow along as they solve six brand-new mysteries all by themselves! Featuring plenty of familiar faces from investigations past, as well as a few brand new suspects, Mango and Brash and YOU (the reader) will get to the bottom of cases big and small!