I recently watched The Snowtown Murders, and loved it. I'm not sure if Bunting had aspd, but it seems like it might fit.
http://www.youtube.com/watch?v=qcoCTA2IZ7c
Looking for more recommendations. What movies on this topic or about serial killers, etc, have you enjoyed? (I realize that aspd and serial killing are not the same thing, I just think y'all might have good recommendations for these kind of films, for some reason.)