Classic anti-hero ... Strange how you can find a program engaging enough to route for the killer hoping he doesn't get caught. Cleverly done. Can't decide whether or not he'll get caught at the end of the series of if they'll spin it out for another run.
RE: Classic anti-hero ... The flashbacks as well to how his stepfather picked up on it, knowing that the urge to kill couldn't be overcome, so instead guided him into directing it. As you say you end up with an empathy toward him. Some good, very dark, one liners as well.