The Warrens signed an agreement with some Author saying that only he can make movies, tv shows, books etc. on their work. Then in 1997 the Warrens signed a contract with WB saying they can use their work to make movies. The Conjuring comes out and the author says that it's based on his book that the Warrens gave him the rights to. WB says that it's "Historical Fact" so they can use it according to law. So WB has to prove it's "Historical Fact" and that all the stuff in the movies actually happened or they have to pay him.
You watch your mouth when you second guess Mr. Scarface.
