Many of us love horror movies, but what about 10 best horror movies based on true stories? Horror movies based on true stories have that something extra to that make them even more frightening because they are supposedly real. Here is a list of 10 best horror movies based on true stories.

  1. "Psycho" This is a horror movie loosely based on the real character of Ed Gein. Ed Gein was a mamma's boy just like Norman Bates in "Psycho" so while they are not direct stories, it is still a horror movie based on a true story.

  2. "The Exorcist" While this movie showcased a young girl that was possessed, the real story it is based on was about a boy who lived in Maryland. He was named Robbie who had been playing with a Ouija board alone and supposedly became possessed by a demon. The movie was also based on a book by the same name.

  3. "The Texas Chainsaw Massacre" This is another movie supposedly based on real life serial killer, Ed Gein. However, many think that is was more of a ploy to get people to see it because saying it was a true story sells more tickets.

  4. "The Amityville Horror" This movie was based on a "true" story about a family having to leave their haunted house. Whether or not you believe it is a true story or not, the Amityville house has spawned countless movies, books, tourists and researchers.

  5. "Open Water" This is a true story about a couple of scuba divers who are accidently left behind when their tour boat leaves them in shark-infested waters. This is a psychological thriller more than a horror movie, but it is quite effective in scares.

  6. "Wolf Creek" This movie is based on a true story but the movie and story differ drastically. The murder didn't happen in Wolf Creek; there was only one murder who got caught almost immediately. It was also loosely based on another serial killer, Ivan Milat, who tortured and killed hitchhikers.

  7. "The Haunting in Connecticut" This movie was based on a supposedly true story about the Snedeker family. However, much like the Lutz family and the Amityville house, other residents have said there is no truth to the stories and nothing paranormal has happened.

  8. "The Girl Next Door" This movie is based loosely on the story of the real life murder of Sylvia Likens. In 1958, Sylvia and her sister went to live with her aunt and cousins and was subjected to brutal torture, rape and eventual murder.

  9. "Henry: Portrait of a Serial Killer" This is another particularly disturbing movie based on real life events. It is about Henry Lee Lucas and Otis Toole, a pair of serial killers in the '70s.

  10. "Borderland" This is a movie that is a true account of a spring breaker who died at the hands of a gang that practices Palo Mayombe. It's pretty accurate as far as movie versions go.

There is your list of the best horror movies based on true stories. Some of these are more loosely based on fact then others, but each one is based on some sort of factual occurrence.