Hobnob Theatre Company will present “A Christmas Carol” at 8 p.m. Dec. 20 and 21 and 2 p.m. Dec. 22 at the Succop Theater at Butler County Community College. Tickets are $10 for adults and $5 for children age 12 and younger, available at www.hobnobtheatre.com/tickets or at May's Music Shoppe, 247 E. Jefferson St. Tickets also will be sold at the door one hour before curtain.

Comtra Theatre, Route 19 in Cranberry Township, presents the musical “Annie” through Dec. 21. Show time is 7:30 p.m. Fridays and Saturdays. Tickets are $15. Reservations can be made by calling 724-591-8727 or at comtraplayers.com.

Point Park University Conservatory Theatre Company presents “The Alchemists’ Lab,” a comedy by a local playwright in collaboration with Conservatory Theatre Company students, through Sunday in Rauh Theatre at the Pittsburgh Playhouse, 222 Craft Ave. Performances begin at 8 p.m. today and Friday, at 2 and 8 p.m. Saturday, and at 2 and 7 p.m. Sunday. Tickets are $12 to $20. Call 412-392-8000.