It appeared that the group that came in next, didn't want to be spoken to individually. It became clear why after Sam had brought them in.
They weren't human.
Cass wasn't exactly sure what the right way to call them was. Partial human? Shifters? Were-people? There were so many things that they could be called, and Cass didn't trust what newspapers printed. Given the time frame, he was sure that they were derogatory forms.
What he was clear about was that they were probably merchant heads from the nearby town, and they didn't seem particularly happy to see him.