Tennessee Williams’s The Night of the Iguana has been called the ”last masterpiece by one of America’s greatest and most powerful playwrights.” Chronicling the struggles of Lawrence Shannon, a former Episcopal priest who’s been ousted from his church for inappropriate conduct, Iguana is set in the 1940s. Recently accused of statutory rape and on the verge of a nervous breakdown, Shannon has stranded a busload of tourists in a small Mexican town, desperate to find some way out of his downward spiral. Mimi Holloway directs.

8 p.m. Fridays and Saturdays, 3 p.m. April 21. Through May 4. Theatre Southwest, 8944 Clarkcrest. For information, call 713-661-9505 or visit theatresouthwest.org. $17.

Fridays, Saturdays, 8 p.m.; Sun., April 21, 3 p.m. Starts: April 12. Continues through May 4, 2013