I read a book about 20 years ago, and this is what I remember:
- It was science fiction. (Not fantasy, it was about people here in our world.)
- The protagonist could see halation above the head of each person he saw, in different colors.
- The color and shape of the halation let him know about the person.
- This might have been horror book, but not sure, I don't remember the protagonist to be killing anyone but not sure about it.
Can anyone identify this book?