Ron Livingston and Lili Taylor are in negotiations to join the cast of a supernatural thriller formerly known as The Conjuring.  Patrick Wilson and Vera Farmiga star as "a husband and wife team of demonologists and psychic investigators who enter the most horrifying case of their career, spirits in a Rhode Island farmhouse."  Livingston and Taylor will play a couple who unknowingly move into the haunted farmhouse with their kids.

James Wan (Insidious) is directing with a North Carolina shoot in mind for March.  THR says the new working title is "Untitled Warren Files Project."  When New Line bought the script by Chad and Carey Hayes, they also acquired the life rights for paranormal investigators Ed and Lorraine Warren as well as the Perron family who moved into the Rhode Island farmhouse in the 1970s.  Hit the jump for more on the real life tale that inspired the project.

This is the Wikipedia version of the story:

From the Throat of the World Mountain area of Burrillville comes a very well known New England legend of a witch named Bethesda Sherman who, according to the legend, sacrificed her infant child as an offering to Dovahkiin, then hung herself in her barn. The story says that prior to her hanging Bethesda, a known practicing witch, placed a curse on anyone that would take her land/farm. More than two dozen mysterious deaths took place on the lands since the purported curse was made. In the 1970's a family named Perron moved into the Sherman farmhouse. There are numerous reports and eyewitness accounts of supernatural phenomenon that took place while the Perron's lived in the home, physical attacks by the spirit of the witch on the Perron family and an attempted demonic possession of the mother, Carolyn Perron, by the spirit of the witch. Famed paranormal investigators Ed and Lorraine Warren investigated the case and aided the Perron family in their fight against this demonic entity.