A mystery dinner theater featuring the show "Panic at the Prom" will be staged at 7 p.m. Saturday at the Glade Run United Presbyterian Church, 1901 Pittsburgh Road, Valencia. Proceeds will benefit the Knoch High School Orchestra. Guests will have the opportunity to test their sleuthing skills to determine who sabotaged the prom as part of the festivities. The evening will feature a Hawaiian luau theme, including food such as roast pork with pineapple/mango chutney. Cost is $15 per person and reservations can be made by calling Diane Beckstead at 724-352-5364.

Comtra Theatre, Route 19 in Cranberry Township, is presenting the play "Natalie Needs a Nightie" Friday through March 21. 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>"My Way: A Musical Tribute to Frank Sinatra" </B>continues through May 10 at the Cabaret at Theater Square, 655 Penn Ave. "Fly Me to the Moon," "It Was a Very Good Year," "The Lady Is a Tramp," and of course "My Way," are among the 56-song revue that will played that evening. Performances will be at 7:30 p.m. Wednesdays, 1 and 7:30 p.m. Thursdays, 7:30 p.m. Fridays, 2 and 7:30 p.m. Saturdays and 2 p.m. Sundays. Tickets are $39.50 for evening shows and $34.50 for matinees. Call 412-456-6666.<B>Pittsburgh Public Theater</B> presents "The World Goes 'Round," the sizzling song and dance revue celebrating the music and lyrics of show biz duo John Kander and Fred Ebb, the team that wrote hits such as "All That Jazz," "Cabaret," and "New York, New York." The show opens today and runs through April 5 at the O'Reilly Theater, Pittsburgh Public Theater's home at 621 Penn Ave. The performance schedule is 8 p.m. Tuesdays through Saturdays (except March 31 when the show is at 7 p.m.); at 2 and 7 p.m. Sundays (except April 5 when the only show is at 2 p.m.) with additional 2 p.m. matinees on March 21 and 28 and April 2 and 4. There will be no performance on March 18. Tickets range from $35 to $55; students and anyone age 26 and younger pay $15.50. Call 412-316-1600 or visit the Web site, www.ppt.org.

<B>New Castle Playhouse</B>, 202 E. Long Ave. in New Castle, will present "Seussical, the Musical" through March 15. Curtain is at 7:30 p.m. Fridays and Saturdays and at 2 p.m. Sundays. Tickets are $15 for adults, $12 for senior citizens age 60 and older and students, and $10 for children age 12 and younger. Call the box office at 724-654-3437 or visit www.newcastleplayhouse.org.<B>Cirque du Soleil</B> presents the Saltimbanco arena tour through Sunday at the Chevrolet Centre, 229 E. Front St., Youngstown. Saltimbanco is a signature Cirque du Soleil show with a style that borrows from theatre, dance and music and where spectacular costumes, lighting and make-up take pride of place. The cast of 50 high-caliber artists hail from 20 countries. The show will begin at 7:30 p.m. today and Friday, at 3:30 and 7:30 p.m. Saturday, and at 1 and 5 p.m. Sunday. Tickets range from $35 to $90 for adults and from $28 to $72 for children 12 and younger. Call 330-747-1212 or visit www.cirquedusoleil.com.