I ran this two days ago. Since it combines a murder mystery with a fifties dectective story (aka a McGuffin hunt) it was easy to run with no changes. You can lead the players by the nose, let them fight or combine the two. Since I do have Mad Mage, and most of the players have played in it, introducing the town was no problem.
I did add a quick flameskull battle to warm up the group. The only other combat was a one on one in the Bat's Roost due to fact they failed to get the information with skill checks. Play time was one hour and fifty minutes.
[4 of 5 Stars!]