What story is a haunting in Connecticut based on?

The Haunting in Connecticut is based on the true story of the Snedeker family. In 1986, the Snedekers moved into a farmhouse in Southington, Connecticut, where they experienced several paranormal events. The family claimed to have seen apparitions, heard disembodied voices, and felt physical attacks. The Snedekers eventually left the house in 1988, and their story was later turned into a book and a movie.