(W/A) John Patrick Green (CA) John Green. InvestiGators Mango and Brash don their fanciest vests for InvestiGators: Off the Hook* the next mystery in the hilarious adventure series from John Patrick Green. The InvestiGators are the best crime-fighting duo in the world. But not even their hi-tech training programs can prepare them for the return of their greatest nemesis* Crackerdile* in a shocking new form! Even worse* he’s creating a team of super villains! Faced with the choice between saving themselves or catching the crooks* can Mango and Brash make sure the gator good prevails?