In telling the story of an innocent young man wrongly convicted of a brutal murder, Lee Brock’s highly watchable production of Lyle Kessler’s Perp becomes a battle between good and evil. Its colorful characters challenge black-and-white assumptions, which in turn gives rise to universal questions about which side of this dichotomy they are on. But perhaps the most noteworthy aspect of the play is the professional debut of Ali Arkane in the lead role. Arkane’s quirky portrayal of the protagonist Douglass is endearing through and through. With Douglass as the criminal center stage, Perp is one of the most serene crime dramas ever.