Directed with confidence in the play’s internal rhythm by Keegan’s Artistic Director Mark Rhea on a well-designed set by Matthew Keenan (who also plays the vain, trigger-happy brother Coleman with glee), the first rate cast features Bradley Foster Smith as the more unhinged and amusingly pious brother Valene, Chris Stezin as Father Welsh, and Sarah Chapin as Girleen. The play wraps up the company’s 19th season — it was my first visit to the surprisingly comfortable theater off Dupont Circle, but it won’t be the last. See it.