A mysterious man arrives at the offices of an FBI agent and recounts his childhood: how his religious fanatic father received visions telling him to destroy people who were in fact "demons.
Notice the difference in the faces. Cro Magnon vs Neanderthal. God says in Isaiah you'll know Jews by their faces. Hook nose, sloping forehead, weak chin, large mouths (think Julia Roberts), widow's peak, frizzy, curly hair, short necks and stature, etc.