I watched it with my grown up kids (16 and 17 years) and after 30' I thought it will go in the good direction, but not. After the kids went into the house, to make the call it became worse. Bad acting, a lot of screaming, you see what the father of the 2 boys did to them when they were little but further no explanation, did they got to the back door or not. Zombie stuff....
The older sister killed her young sister but nobody find her body by just throwing it from the bridge ?? Nor her bike.
Not worth to watch it !!