Comtra Theatre, Route 19 in Cranberry Township, continues the mystery-drama "Wait Until Dark" through Saturday at the theater on Route 19. Curtain is at 7:30 p.m. Fridays and Saturdays. Admission is $12 for plays and $15 for musicals. Box office opens at 6:45 p.m. the day of the show. Call 724-773-9896.

<B>Quantum Theatre</B> presents "Cymbeline" by Shakespeare through Aug. 24 outdoors in the Rose Garden at Mellon Park, at the corner of Fifth and Shady Avenues in Shadyside. Tickets range from $25 to $35. Call 412-394-3353.<B>Pittsburgh CLO</B> presents "West Side Story" through Sunday at the Benedum Center, 719 Liberty Ave. This is the final show of the summer season. Tickets start at $18.50 and are available by calling 412-456-6666 or by visiting the Web site, www.pittsburghCLO.org.<B>The Backstage Bar and Cabaret at Theater Square</B>, a project of The Pittsburgh Cultural Trust, in Theater Square at 655 Penn Ave., is showing "Shear Madness" through Sept. 28. Performances start at 7:30 p.m. Wednesdays through Saturdays, at 2 p.m. Saturdays and Sundays and at 1 p.m. select Thursdays. Tickets are $39.50 for evenings or $34.50 for matinees. Call 412-456-6666 or visit the Web site, CLOcabaret.com.