Do you believe that eyes are the mirrors to the soul?
As a Wiccan I really believe this by relying on mainly intuition you look in someone's eyes if they are evil it's almost like a creepy sensation comes over you almost like you can't stare long into their eyes if they are good you will have no tension there looking into their eyes. Now if they are a little mentally ill you'll feel a light tension but not as intense and uncomfortable as a evil person.