9 Horror Films Based on True Events: From Psycho to The Conjuring

• Horror films based on true events, like 'The Conjuring' and 'Psycho', often draw from real ghosts, serial killers, or unsolved mysteries.
• 'Psycho' and 'The Texas Chainsaw Massacre' are inspired by the notorious killer Ed Gein, who committed murders and exhumed bodies.
• 'The Amityville Horror' is based on claims by George and Kathy Lutz about a demonic presence in a house where the DeFeo family was murdered.
• 'The Conjuring' series uses real case files of paranormal investigators Ed and Lorraine Warren, including the Perron family haunting and the Enfield Poltergeist.
• 'A Nightmare on Elm Street' was inspired by reports of 'Sudden Death Syndrome', while 'The Exorcism of Emily Rose' is based on Anneliese Michel's tragic exorcism.