Is it nature or nurture? I do not think this heartbreaking film comes on one side or the other of what makes a psychopath. While it is obvious that there is something off about Kevin since he was in elementary school, it does not mean his parents could not have done something about it. It’s one of those movies that sparks a lot of debate after you see it. Tilda Swinton delivers a great performance as the mom who is dealing with the aftermath of what Kevin did and is our surrogate as we go through his life. She never seems like she wanted to be a mother and move to the suburbs. John C. Riley is also excellent playing the father who never sees anything seriously wrong with Kevin. This combination ensures they never really talk about their son or deal with the issues he has.