Morality

Harry knows that Dexter will eventually indulge his desire to kill a human being. Harry also knows that Dexter's desire to do this does not stem from the way he was raised but rather from the horrible crime that ended his mother's life and left Dexter an orphan. Harry could attempt to get counseling for the boy, but decides instead to teach Dexter how to kill without getting caught. Harry teaches Dexter not only the skills he needs to know in order to protect himself but also teaches him to only kill people who deserve to die. By doing this, Harry gives Dexter a moral excuse for what he is doing. The first time Dexter kills someone, it is a nurse that Harry asks Dexter to kill. The nurse is killing her patients by giving them too much medication. Harry needs her to stop before she kills him...