MasonMaestrohasjustdirectedwhatheconsiderstobehismasterpiece,afilmtitled'That'saWrap.'Thecastarrivetothestudioexcitedtocelebratewhattheyjustcreated.Buttheyaren'ttheonlyonesthere.SomeonehasdressedupasMistress,theslasherinthefilm,andhasdecidedtomaketheartrealbystagingtheirownhighlystylizedkillscenes.Onebyone,the..eee …