"Uhhh..." Sam scrunched his eyebrows together as he fell into stride beside Jo. He was still going through all of the facts in his head to come up with some kind of theory that would help them find where the Succubus was. "Well, it doesn't seem to be your normal shape-shifting succubus. The bartender said that all the girls those guys were with lived around town. And it also doesn't explain why some of the guys were found with dead old women, too. Unless..."
Again Sam looked over at Dean. He wouldn't be surprised if Dean had figured out what he seemed to be getting at as well. The two of them often ended up at the same conclusion at the same time when Sam thought out loud...sometimes to the point that it was a little unnerving.