NEW YORK — With regard to dramas set in South Boston, the law of diminishing returns is bound to kick in at some point.
But not yet. Not when Southie can inspire a play like David Lindsay-Abaire’s “Good People,’’ which maps the fault lines of social class with a rare acuity of perception while also packing a substantial emotional wallop.
“Good People,’’ which opened last night at the Samuel J. Friedman Theatre in a Manhattan Theatre Club production directed by Daniel Sullivan, is studded with references to the clam rolls at Sully’s, Whitey Bulger, and the Sugar Bowl. But the playwright, a South Boston native whose “Rabbit Hole’’ won the 2007 Pulitzer Prize for drama (and was adapted into a film starring Nicole Kidman), is after something much deeper than the splashes of local color that enlivened the likes of “Good Will Hunting’’ and “The Departed.’’