Usually, a sequel to one of the biggest movies of all time would be carefully concocted in a Hollywood boardroom to maximize four-quadrant potential. John Jackson Miller wrote his continuation of Tim Burton’s mega-hit Batman over the last year in his memorabilia-filled office in central Wisconsin.

Most disquieting of all for him, is the possibility that events in the Gotham Cathedral were not as they seemed — and that maybe, just maybe, his greatest enemy might have pulled the king of all practical jokes,

Onscreen, Batman has been ejected from Gotham City. Both the recently released sequel “Joker: Folie à Deux” and the new HBO series “The Penguin” focus on gruesomely grim revamps of iconic Bat-villains,