As youngsters in 1988, sisters Katie and Krista adored playing in their back garden, while their father filmed them on his video camera. They had no idea that a demon had been haunting them - and their family - since the time of their great grandmother, who allegedly made a deal with the demon in exchange for wealth, which requires the sacrifice of the first born male offspring. But since then, there has been no males born into the family.
Katie and Krista start to become increasingly frightened when eerier things start to happen to them. One day, they take the video camera into their restroom to play a popular game, 'Bloody Mary'. They turn off the lights and chant 'Bloody Mary' three times and for a few seconds, to no avail. Then something shocks the girls out of the bathroom; the light from outside the bathroom reveals the silhouette of a woman, staring into the mirror.
The first part in the Paranormal Activity franchise showed Katie and her boyfriend Micah filming the spooky goings-on in their house, concluding in Katie - possessed by the demon - propelling Micah at the camera and killing him. In the following film, it exposed that before possessing Katie, the demon had possessed her younger sister Krista and endeavoured to take her baby son, Hunter. Krista effectively passed on the demon to her sister by burning a picture of Katie, only for the possessed Katie to kill Krista and her husband and abduct Hunter.
Directed by: Henry Joost and Ariel Schulman
Starring: Katie Featherston, Sprague Grayden and Lauren Bittner