There's an early point in the Richmond Hill Barn Theatre's Murder on the Run in which Sara Laufer's angel-to-be Kitty follows her explanation of the "rules" behind playwright Fred Carmichael's universe by saying to the audience, "I bet you're really confused, right?" Um, no. You just explained the story's rules very clearly and in great detail. And this exposes one of the flaws of Carmichael's writing: He makes sure absolutely nothing is left to the imagination. But at least the setup to this comedic murder mystery, though a bit convoluted, is kind of fascinating.