Pariah

Imagine that your son or daughter has suddenly gone missing... seemingly vanished from the face of the earth... just as happens in real life, over and over again, every single day, all around the world. How frightened would you be? How desperate would you be? What would you be willing to do to find your child? Would you be willing to go so far as to work with a psychic that the FBI wants to bring in?
But suppose that psychic was abominably filthy, horribly twisted and disfigured, and smelle...