After some initial confusion about where the "Box Office" was to get my will call tickets (its a small table with a computer near the Fitzgeralds' Showroom) and some almost rudely probing questions the evening got started.
The food was decent, and I discovered later the probing questions were to get a feel for the room for the sake of the audience participation bit.
They don't give you much time to figure it out. My Girlfriend and I pretty much knew who the killers were, but we didn't know enough of the details to "Win". It was still very fun.