Two thousand years ago, cultists of Bhaal, the god of murder, were driven away from civilization and started their own society away from everyone else. Their culture is centered around worship involving ritual sacrifice and cannibalism.
Of course, your players won't know this. On the surface they will seem friendly and curious about these adventurers in their midst. Will the party discover the secret of Kamourat before it's too late or will the be the next in a long line of unfortunate travelers who have fallen prey to this grisly death cult?