Paranormal Activity

Over the weekend I went to the cinema to see Paranormal activity.
Although it was not as scary as I was expecting I thought it was a really good film and the way they filmed it was really effective.
The whole film is filmed on a handheld home camera by the couple in the film.
The woman, Katie, has been followed to 3 different houses by some kind of ghost or demon, she believes, that watches her at night, makes noises in the house, whispers her name and breathes on her.
As an attempt to try to catch any of this activity on camera and get to the bottom of it, her husbad, Micha, sets up the home camera on a tripod in their bedroom with a microphone. The camera is placed so that you can see the bedroom and the door, and the corridor and stairs.
Each night different strange things happen that sometimes wake up, and sometimes don't wake up the couple. One night their bedroom door opens and closes, another night they hear footsteps coming up the stairs and into the bedroom, another night they hear a loud thud from downstairs in their front room.
As the film goes on, whenever it comes to the night scenes the whole cinema made groaning noises and sunk into their seats as they knew something unexpected and scary was about to happen, which I think was a really good effect to have on the audience.
The part of the film which I believe was most succesful and effective was the end. The woman becomes possessed by the demon and you see her get out of bed and go downstairs. As you cannot see downstairs you do not know what is going on and then siddenly you hear a desprate, terrified scream of Katie so Micha jumps out of bed and runs downstairs after her. After some kind of struggle everything goes quiet. You hear footsteps coming up the strairs towards the camera again and then it all goes quiet. The silence stays for a couple of minutes which had a huge impact on the audience because they were in suspence and it was left to our imagination of what was happening and what had happened downstairs. Suddenly the silence breaks when the possesed Katie throws a dead Micha at the camera.
The end was so effective and had everyone in the cinema screaming. The element of silence was what was so scary because you did know what was coming next. Also the fact that you did not see the demon or whatever was possessing her for the whole film had a huge impact as it was left to the audiences imagination of what it was.

I hope that the fact you cannot see our stalkers face in our film, has a similar scary or creepy impact on our audience.