When the Smurl family moves into a duplex, they find out it's haunted. When the Catholic Church is no help, they reach out to famous demonologists Ed and Lorraine Warren
OMG, I remember watching this movie around the time of it's release. I had nightmares for weeks after. Perhaps now showing its age a little, but overall a good story, and made all the more terrifying as it is based on a true story.
It is so hard to find a Truly good Horror movie and in my opinion, this doesn't dissapoint.