With spellbinding reenactments and brilliant flashes of insight, playwright-actor Tom Dugan explores the psychology behind Simon Wiesenthal’s relentless efforts to bring top-ranking Nazis to trial. His remarkable one-man play received a deservedly warm welcome at its New York premiere at the Acorn Theater. Here’s why: Dugan succeeds in avoiding both the hero worship and demonization that plague Wiesenthal’s legacy, presenting him as merely human.