The Conjuring: The Devil Made Me Do It is an American supernatural horror film written by David Leslie Johnson, and produced by Peter Safran and James Wan. It is the sequel to The Conjuring 2 and the eighth installment in The Conjuring Universe.
The Devil Made Me Do It reveals a chilling story of terror, murder and unknown evil that shocked even experienced real-life paranormal investigators Ed and Lorraine Warren. One of the most sensational cases from their files, it starts with a fight for the soul of a young boy, then takes them beyond anything they'd ever seen before, to mark the first time in U.S. history that a murder suspect would claim demonic possession as a defense.
It is said and I can confirm that at the end of the movie they show the voice of the real evil possession along with a short film of the Warrens talking about it. I loved watching this movie, definitely my #2 in between the three conjuring movies.
Here's a trailer for the movie: https://youtu.be/bBRAseMeAIU