We all know people who are curiously detached from empathy, and yet get on with their daily lives with little turbulence or commotion. It's not quite psychopathy, though technically or diagnostically it's not far off.
I guess it's less predatory. Psychopaths are ever-vigilant for opportunities to exploit.
Particularly people.
The Man Who Wasn't There is an excellent portrait of just such a person. It's not perfect in terms of logical progression of the script, but it's yet another Coen Brothers gem of a movie.
