The ending confuse me. Spoilers

1. I read somewhere on here that. They going out for Ice cream was something they told the little girl when they where moving. So the just moved and left the babysitter and her boyfriend locked in the bathroom.

2. Did they kill the parents of the babysitter

3. Why where they late getting home was that planed because they knew what would happen. Did they evern have a wedding.

4. The little girls friends mom was is interested in the house. But never said anything to anyone about it.

5. The fact that it is a sound proof house is creepy.

6. Thins might not have happened if she did not bring her boyfriend over. She would not have know it would upset the older son. But if the boyfriend did not come to the house the older brother might not have gone crazy.

I like the movie. But I did not like that there where so many hole and stupid parts that made zero sense. If they explain stuff more it migh have been better.