The Strand Theater, 119 N. Main St., Zelienople, is staging the musical comedy, “I Love You, You're Perfect, Now Change” through Sunday. Curtain is at 8 p.m. Friday and Saturday and at 2 p.m. Sunday. Reserved seats are $20 to $25. Call 724-742-0400 or visit www.thestrandtheater.org.

Musical Theatre Guild stages “The Rocky Horror Show” at 8 and 11 p.m. Oct. 21, 22, 28, and 29 and at 8 p.m. only Oct. 27 and 30, all at the William A. Lehnerd Performance Hall in the MTG Production Center in Memorial Park. Tickets are $17 and available at May's Music Shoppe, 247 E. Jefferson St.; or call 724-283-5811.

Comtra Theatre, Route 19 in Cranberry Township, presents “An Inspector Calls” through Saturday. “Harps and Harmonicas” runs Oct 14 to 29. Curtain is at 7:30 p.m. Fridays and Saturdays. Tickets are $12. Call 724-773-9896.

<B>Quantum Theatre</B> opens its world premiere Karla Boos’ adaptation of Graham Greene’s “The End of the Affair” today at the former Emma Kaufmann Clinic, 3028 Brereton St., Polish Hill. Curtain is at 8 p.m. Wednesdays through Saturdays and at 7 p.m. Sundays through Oct. 30. Tickets are $35 to $48; students pay $18. Call 888-718-4253 or visit www.quantumtheatre.com.