Natural Enemy is not unlike a plethora of similar revenge type of movies involving a character with considerable "damaged goods" out to destroy those he feels is responsible for his twisted state.
Here, William McNamara is the son of adopted parents who abused him and apparently ruined his life. To retaliate, McNamara has tracked down his natural parents and slowly begins to ruin their lives.
While the story is uninspired, it does move at a fairly fast pace. While McNamara does not possess the emotional range of many other actors in his age group, he is fairly convincing here and does send a few chills our way.
Perhaps the most disappointing element of the film is that, in its own way, it tries to shed light on the fact that many adopted children often grow up to be emotionally scarred for life, if not worse, (McNamara's character being an extreme example.) Although this is a noble undertaking, we can't respect the movie enough to care about this aspect of it. In addition, the movie falls way too short of taking itself seriously enough to double as a legitimate "message picture" in this regard.
Ultimately, we are left with not a whole lot to think about.
