Rushmore McKenzie agrees to go undercover to help the ATF track a cache of stolen guns--after all, what could possible go wrong? Rushmore McKenzie is both a millionaire and an unlicensed PI, which means he can afford to do the occasional favor and, as a former detective for the St. Paul (Minnesota) Police Department, he's got the necessary skills and connections to do them right. But this time, he's really stepped in it. When the ATF gets a lead on...