One of my favorite movies of all time is Clue so I've wanted to do a dinner mystery theatre for as long as I can remember. I want to give it 3.5, but couldn't. It was a fun experience and you actually do have to think in solving the crime. Hope for fun people at your table because they can make it better. We had a fun table and they made the experience more enjoyable than what it would be.
The food isn't good. That's the worst part of it, hands down! The dessert was semi-enjoyable. The chicken was dry but my friend liked the meatloaf (to a degree) . We ended up going to dinner after.
The run time is about 3 hours, but time went quickly with all the breaks. Overall, I'd say go and give it a try, but be prepared to eat after. You'll be entertained.