Serenading Louis, Lanford Wilson's intimate examination of marriage -- entrapment -- in suburbia, Serenading Louie, from 1970, is building a reputation as a neglected masterpiece. Steven Scott Mazzola directs. To Aug. 21. American Century Theater's Gunston Theater II, 2700 S. Lang St., Arlington. Tickets are $26 to $32. Call 703-998-4555 or visit americancentury.org.