A family—the Perrons—moves into an old farmhouse in Rhode Island and begins experiencing terrifying supernatural events.
They call in the Warrens, who discover the presence of a powerful and malevolent entity tied to the house's dark history.
In 1968, renowned demonologists Ed and Lorraine Warren investigate the Annabelle case, in which friends Debbie and Camilla have a possessed doll.
They allowed a spirit, who claimed to be a seven-year-old girl named Annabelle Higgins.
Three years later, in 1971, Roger and Carolyn Perron move into a farmhouse in Harrisville, Rhode Island, with their five daughters: Andrea, Nancy, Christine, Cindy, and April.
Carolyn contacts the Warrens, who conduct an initial investigation, during which Lorraine, a clairvoyant, sees that a dark entity has latched on to the family so that even leaving the house will not free them.
To gather evidence, they place cameras and bells around the house with the help of their assistant Drew Thomas and police officer Brad Hamilton.
Research reveals that the house once belonged to an accused witch and Satanist named Bathsheba Sherman (a relative of Mary Towne Eastey), who sacrificed her week-old baby to the devil and killed herself in 1863 at 3:07 in the morning after cursing all who take her land.
There have since been reports of numerous murders and suicides through the years in the houses that were built on the land.
Bathsheba completely possesses Carolyn. In the cellar, Lorraine sees the spirit of a woman whom Bathsheba had possessed long ago and forced to kill her child, realizing she will force Carolyn to do the same.
The Warrens conclude they have sufficient evidence to receive authorization from the Catholic Church to perform an exorcism, but Father Gordon explains that approval would have to come directly from the Vatican because the Perron family are not members of the church.
The Warrens' daughter Judy is attacked by Bathsheba as a warning to the Warrens
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