Celebrating her birthday at a restaurant with her four kooky siblings — a hippie, a valley girl, a trucker and a banker — Rosemary makes enemies with everyone around her. When she disappears and is presumed murdered, the only objective witnesses in the restaurant are the audience members, who must cast their vote. The actors involve the audience, who will solve the mystery. A family-friendly show. Enjoy light cafe bites with an assortment of locally created dishes throughout the performance. Limited seating. Tickets: $35 adults; $25 children. Call 386-668-5553, or visit GatewayCenterForTheArts.org.