The Let Me In film clip offers the backstory with Roger Jenkins. He chokes the teenage boy and steals the car.  I believe, the father is getting a victim for his daughter, who is a vampire.

For those who want to see more blood, you will have to wait for the movie to open. All in all, the movie looks like a great production that is worth seeing if you like this type of movie.

The movie will be in theaters October 1, 2010.