Sight (2008)

Jeffrey (Clayton Haske) and Dana (Allison Persaud) share a common bond. Both of them are haunted by spirits of the dead. These vengeful demons are not apparent to anyone else. But they are enough to cause Jeffrey and Dana to believe they are crazy. Both fear that others will realize that something is terribly wrong with them so they have come up with a complete other reality in which they operate. This is in order to fool those around them. Unfortunately, Dana disappears and it is up to Jeffrey to figure out if the demons had anything to do with it.