In the contemporary comedy The Savannah Disputation, a Pentecostal missionary gets more than she bargains for when she drops in on two Catholic spinsters and sparks a crisis of faith. Actually, "a theological showdown about what it means to truly believe." Closes this Sunday, Aug. 22. Olney Theatre Center, 2001 Olney-Sandy Spring Road, Olney, Md. Tickets are $26 to $49. Call 301-924-3400 or visit olneytheatre.org.