The film
Deputy Sheriff Lou Ford is a pillar of the community in his small west Texas town, patient and apparently thoughtful. Some people think he is a little slow and maybe boring, but that is the worst they say about him. But then nobody knows about what Lou calls his "sickness": He is a brilliant, but disturbed sociopathic sadist.
Synopsis from TMDB.
The name
Also in The Killer Inside Me
Elsewhere on screen, Billy
