The Pulitzer Prize-winning play Dinner with Friends, by Donald Marguilies, explores what happens to decades of friendship between two married couples when one couple is on the verge of divorcing. Who's to blame, who's to be believed, and who takes sides? Through Sept. 26. Olney Theatre Center, 2001 Olney-Sandy Spring Road, Olney, Md. Tickets are $26 to $49. Call 301-924-3400 or visit olneytheatre.org.