Paranormal Activity 3 is very scary. There are terrifying jump scares in the film than the other films including Julie (Katie's and Kristi's mother), wearing a mask, suddenly startles the men in the cabinet.
There are also activities that never happen in the first two:
- a ghost is shown with a cloth and staring the babysitter. It suddenly vanished when the babysitter turn around.
- the ghost is seen in a dark figure and moves very quick.
- the ghost kills Dennis by breaking his back (because the ghost never kills the characters without any possessed bodies are used) But it never shows how it began. I will expect it will show in Paranormal Activity 4.