After mingling with a few zany characters and watching the show, which takes about an hour and contains at least one murder, you confer over dinner with your tablemates, grill the suspects, and, if you feel confident, accuse a killer. The cases change nightly, so you can attend several times without duplicating your experience. Actors seem to be having fun, and they’ll even tone down the grown-up jokes if they see young children in the crowd, although these low-budget shows are clearly more suited to adults. As for audiences, they appear to be grateful for a rare chance to employ their brains in this town. Beer and wine are included, too. Lots of brochures offer discount rates.