The first thing I need to make clear is that the novella "Apt Pupil" is much better than the 1998 movie adaptation. Despite a superb performance by Ian McKellen, the filmmakers made a number of choices which hurt the integrity of the story. The novella is a meditation on the nature of evil, whereas the movie is more of a thriller.
Reading the novella at this late stage brought into focus all the things I've always admired about Stephen King: his vivid imagination, his sharp attention to detail, his perverse sense of humor, and his mastery at crafting a battle of wills between two characters. But I was also impressed that he tackled material this challenging. He not only had to present a believable Nazi, he also had to confront the question of what makes people evil, all the while telling a compelling story about two unsympathetic characters who are surrounded by idiots.
The story is set in the 1970s. A pampered suburban youth named Todd Bowden discovers that an elderly neighbor of his is an escaped Nazi commandant named Kurt Dussander. Instead of turning him in, Todd blackmails him into recounting his hideous crimes. Todd once did a research paper on the camps and greatly impressed his teachers, who don't realize he is fascinated by the subject for all the wrong reasons.
King invites us inside these two people's heads, and what we see are two individuals lacking in guilt but filled with fear, haunted by the threat of exposure. Both characters turn to violence as a release, but this in turn increases their fear, in a self-perpetuating cycle not unlike drug addiction.
The story tempts us to ask which character is more evil. Though Dussander has done worse things than almost any human being alive, Todd has ghastly potential. Unlike Todd, Dussander rationalizes his actions, giving the standard line about having been just following orders. Todd is simply a sneaky bully who puts on a public face of being a nice, well-adjusted kid.
Even I, a grandson of Holocaust survivors, found myself almost rooting for Dussander. He's smarter and more charming than the boy, and since he begins the story as victim, I had to marvel at the way he maneuvers the situation and turns it to his advantage. It is easy to forget that his cold rationality is in many ways more frightening than Todd's sick perversion. King exploits this deceptive quality of fiction by not letting us get to know any of Dussander's victims until late in the story.
Another question left unanswered is how much Todd's descent into violence is influenced by Dussander. He might have become that way on his own, but we can't be sure. His most obvious internal change surfaces when he privately rationalizes his lack of attraction to his girlfriend by thinking she must be secretly Jewish. (The real reason is that he has violent homoerotic fantasies which take the place of ordinary sexual feelings.) Did he get his anti-Semitism from Dussander, or was it there to begin with? His liberal parents show no signs of prejudice but are trapped in a world of empty platitudes that keep them from seeing what's in front of them.
There are political overtones to the story, set at the end of the Vietnam War. Dussander defends himself by accusing America of hypocrisy: "The GI soldiers who kill the innocent are decorated by Presidents, welcomed home from the bayoneting of children and the burning of hospitals with parades and bunting.... Only those who lose are tried as war criminals for following orders and directives" (p. 130). Here and elsewhere, King hints at the idea that Americans tend to have a sense of incomprehension at evils committed by other countries yet fail to see the parallels when the evil is homegrown.
The introspective nature of the story may help explain why the movie (set in the 1980s) didn't work. The problems are various. The process of abridging the plot for screen time makes certain elements seem arbitrary. The racial aspects of Nazism are largely ignored. Most significantly, the film softens the character of Todd, depicting him more as a confused kid who gets in over his head than as an unrelenting psychopath. This change leads the movie to have a very different ending than in the novella.
I suppose the producers felt that audiences needed to be able to relate to the young protagonist, but it creates an imbalance that obscures the story's message about the nature of evil. The film can't even decide what exactly Todd and Dussander are guilty of doing. There are several confusing scenes that leave us unsure whether the two have been murdering animals or simply imagining doing so.
I had the feeling the filmmakers were interpreting the novella as a typical horror story because it was written by Stephen King. They underestimated the source material, a thoughtful fable with something valuable to say about the world.