Top 10 Scariest Horror Movies Based On True Stories

1 The Girl Next Door

2 The Conjuring

3 The Exorcist

4 A Nightmare on Elm Street

Based on a sleep paralysis.

5 The Texas Chainsaw Massacre

6 Open Water

7 Child's Play

8 Annabelle

9 The Hills Have Eyes

Just look up Sawney Bean

10 Psycho (1960)

The Contenders

11 Jaws

12 Eaten Alive

13 The Amityville Horror

14 The Strangers

15 Henry: Portrait of a Serial Killer

16 Wolf Creek

17 The Exorcism of Emily Rose

18 Fire in the Sky

19 Scream

20 The Possession

21 Megan is Missing