Can someone explain the part with the two boys to me? (SPOILERS)
At the beginning of the film, you hear the two boys (after discovering the murders) on the phone to the police, crying and completely shocked at the horror they've witnessed.
But at the end of the film, they walk around placidly over the dead bodies on the floor, like they're in an art museum. And one of them even kneels, reaches over pick up an object near Liv Tyler (what was it?)
Why the completely different tone and reaction compared to the first 5 minutes of the film, where they were absolutely frantic/frightened? At the end of the movie, they almost seem detached & creepy, like they were the murderers themselves. Wouldn't you either freak out immediately and run to a phone, or refuse to step inside something that obviously looks like a crime scene?