What happens in Paranormal Activity 4?

Answer 1

a boy called robbie comes to stay with a family and since he has come strange things has happend in the house and there was wrighting on the wall saying hunter and so alex asks why itssays hunter and he said it was his name then katie kills the mam alex's friend and alex the mam got killed by she got swung in the air and droped on the floor the alexs friend dies becasse katie broke his neck and alex goes to this house and katie comes and she stands for 1 sec and then she runs up to her and prob pushes her of something