Set in apartheid South Africa, Athol Fugard’s drama reveals the coming-of-age of both a privileged white teenager and his nation. When Master Harold sacrifices his surrogate father, the black servant who raised him, for the biological father who’s abused him, you see how racism severs its victims not only from others’ humanity but from their own. In Blue Heron Theatre’s promising debut, director Dejan Avramovich misses the accents but drives home the decency, both lost and found, in Fugard’s immensely rich 90-minute play. Darren M. Jones’s paternal Sam combines dignity and effortless warmth, Howard L. White is feisty as the other servant, and Dustin Ayers’s monumentally conflicted Harold exposes the thwarted idealism behind so much adolescent rebellion. Through 6/4: Fri-Sat 8 PM, Sun 3 PM, Fleetwood-Jourdain Park, Family Focus Theatre Building, 2010 Dewey, Evanston, 847-392-0226, $15-$18.