How would you describe George Harvey's appearance/looks and personality in The Lovely Bones?

In The Lovely Bones, George Harvey is
characterized as an odd man in terms of his personality, but on the outside he appears
to be just a normal man.  Mr. Harvey is a quiet, unassuming neighbor who keeps to
himself.  No one has anything really to say about him when the detectives go around
during questioning.  But behind closed doors, Mr. Harvey exhibits the classic signs of a
sociopath.  He is insanely orderly, and everything in his house has its place.  He is
fascinated with building dollhouses and creating these microcosmic worlds that he can
control.  It is also later revealed that Mr. Harvey keeps trophies from his many
murders, another sign that Mr. Harvey craves control.  So, Mr. Harvey is a man who on
the outside appears like just a quiet neighbor, but on the inside harbors serious mental
problems.