Armstrong Community Theater presents a murder mystery dinner theater production called “Murder at Cafe Noir” at 7 p.m. April 26, 27, and 28 at the Worthington Civic Center, 218 E. Main St., Worthington. Tickets are $20. Call 724-297-3228. Reservations are necessary.

Kean Theatre, 5847 Meridian Road, presents the comedy “The 39 Steps” 8 p.m. Friday and Saturday. Cost is $23. A matinee will be staged at 2 p.m. Sunday. Matinee tickets are $21. The cast includes Stephan Lingenfelter of Butler. Call about optional lunch and dinner packages. For tickets, call 724-444-5326 or visit www.keantheatre.com.

New Castle Playhouse's Annex Theatre, 212 E. Long Ave., is the site of the musical “Grease” opening Friday and running through May 13. Showtimes are 7:30 p.m. Fridays and Saturdays and 2 p.m. Sundays. Tickets are $15 for adults, $12 for senior citizens and students, and $10 for children age 12 and younger. Call 724-654-3437.

<B>Pittsburgh CLO Cabaret</B> presents Butler native Marlana Dunn in “Ruthless! The Musical” through May 6 at the theater at 655 Penn Ave. Dunn portrays Judy Denmark/Ginger DelMarco in this musical mystery. Also part of the show is Buffalo Elementary School sixth grader Victoria Huston. Tickets are $34.75 to $44.75 and available by calling 412-325-1582 or visiting the website www.pittsburghclo.org.<B>Pittsburgh Public Theater</B> presents “Around the World in 80 Days” through May 13 at the O’Reilly Theater, 621 Penn Ave. Curtain is at 8 p.m. Tuesdays through Fridays, at 2 and 8 p.m. Saturdays, and at 2 and 7 p.m. Sundays, with some exceptions. Tickets range from $28 to $60; students and anyone age 26 and younger with valid ID pay $15.75. Call 412-316-1600 or visit www.ppt.org.<B></B>