Zack Parker’s immaculately twisty and disturbing Proxy is set in the filmmaker’s hometown of Richmond, Ind., where Parker has lived, worked and cultivated a base of crew, performers and investors for most of his adult life. It’s a film that stays with you even as it feels both familiar and remote. At once homespun and remarkably deft, it demonstrates an ambitious director who, in a place without obvious networks of filmmaking support, has figured out how to make remarkably accomplished work for peanuts in that now much sought-after “elevated genre” space. A scene of shocking brutality opens Parker’s fourth feature. […]