Paranormal Activity (2007) on Netflix

A young couple, Katie and Micah, move into a new home and Micah records their life on his video camera. After strange events in the night, Katie admits that as a young child, she had once experienced a ghostly presence in her room. She sensed its malevolence and now worries that it may now have followed her to their new place. Micah is skeptical and sets up his camera in their bedroom to record any overnight activity. After a few days, they see their bedroom door move and it's clear there is a presence in their house. Much worse is yet to come.