Max McLean does something that most would want to avoid—forever. He goes to hell. On purpose. And he has a devil of a good time doing it. McLean, you see, is the eponymous star of The Screwtape Letters, a stage adaptation of C. S. Lewis’s classic that has played to sold-out audiences over the last year and wowed critics in New York, Washington, D.C., and, most recently, Chicago. For the part, McLean slicks back his silvery hair, dons a colorful smoking jacket, and—from a stage short on props but