The plot of the movie is pretty simple. A married couple decide to get revenge on the man who kidnapped and killed their son. Knowing this kind of puts a damper on the movie watching experience, because while the couple and the police are frantically searching for the boy, I knew what would happen to him. It manages to be tense and creepy anyway, though, which is a plus. I can't imagine how horrible it would be to lose a child that way, and I would want to kill the guy responsible too.
Bill Mosley, who plays the kidnapper, is a good actor, so he nails the role of creepy scumbag well. I also like Erika Christiensen and Jesse Metcalf, who play the parents, but they seem a little wooden here. I can empathize with their situation, but it's kind of hard to feel for them when they act this detached. Plus the plot seems a little holey and I'm just not sure it would be this easy for them to do what they do.
I was too busy being annoyed at all these flaws, so I missed the setup for the ending, which is OK, but kinda heavy handed. Stop preaching at me, movie, I have things to do. In the end this movie was OK, but not the best I've ever seen. They could have had something here if they took a little more care with the plot, but in the end the holes annoy me too much for this to have the impact it wants to have.