Can you recommend some best horror novels based on true stories?

Definitely 'In Cold Blood' by Truman Capote. It's based on the real - life murder of a Kansas family. Capote spent years researching and interviewing people involved. He painted a vivid and chilling picture of the killers and the events leading up to the murders. Also, 'The Devil in the White City' is a great pick. It combines the true story of the 1893 Chicago World's Fair with the real - life serial killer H. H. Holmes who used the fair to lure his victims.

'Helter Skelter' is also a horror - inducing novel based on true events. It tells the story of the Manson Family murders. The book delves into the mind of Charles Manson and his followers, and the brutal and senseless murders they committed. It's not just about the horror of the killings but also about the warped ideology that led to them, which makes it a terrifying and thought - provoking read.

One is 'The Amityville Horror'. It's based on the supposed haunting of a house in Amityville. The Lutz family's terrifying experiences in that house were made into a horror novel and later movies.

One is 'The Conjuring'. It's based on the real - life investigations of paranormal investigators Ed and Lorraine Warren. The movie features a family haunted by a malevolent spirit in their new farmhouse, and the Warrens step in to help. Another is 'Amityville Horror', which was inspired by the alleged hauntings at the Amityville house in New York. The events in the movie, like the strange noises and apparitions, were said to have happened in real life to the Lutz family who moved into the house.

Sure. 'The Immortal Life of Henrietta Lacks' by Rebecca Skloot. This novel is based on the true story of Henrietta Lacks, whose cells were used for medical research without her knowledge. It's a fascinating and important read. Then there's 'The Devil in the White City' by Erik Larson. It weaves together the stories of the 1893 Chicago World's Fair and a serial killer who used the fair as his hunting ground. 'A Long Way Gone' by Ishmael Beah is also a best - selling novel based on his own experience as a child soldier in Sierra Leone.

One of the best is 'The Amityville Horror' by Jay Anson. It's based on the supposed real - life haunting of the Lutz family in the Amityville house. The book details their terrifying experiences like strange noises, cold spots, and apparitions, which made it a classic in horror literature.

One such game is 'Outlast'. It is based on the idea of a journalist exploring an asylum with a dark past full of real - world - inspired horrors like inhumane experiments. Another is 'Amnesia: The Dark Descent'. Its atmosphere and some of the themes are inspired by historical accounts of madness and the unknown in old castles. And 'The Blair Witch Project' game, which is based on the movie that was presented as a true story, with players getting lost in the spooky woods.

One such horror film is 'The Conjuring'. It is based on the real - life investigations of paranormal investigators Ed and Lorraine Warren. The movie is filled with terrifying moments that are said to be inspired by actual events, like the hauntings in a Rhode Island farmhouse.

Another good one is 'Amityville Horror'. It was inspired by the alleged hauntings that occurred in a house in Amityville, New York. The movie builds a sense of dread with the strange events that supposedly happened in that real - life location.

Another great one is 'The Imposter'. This is a truly disturbing story. A French man impersonates a missing Texas boy. The documentary shows the real - life interviews and the strange events that unfold as the imposter tries to fit into the family, blurring the lines between truth and lies.