Hag (15:37)
13th Floor; Dread Central; IMDb; official site

Scott and Marie Somers are a married couple. Marie has been sleepwalking and having nightmares, so the two of them start seeing a therapist. Then Scott has a nightmare of his own (apparently), which involves sleep paralysis, and a truly frightening hag who shows up when Marie disappears. He soon wakes up and everything is fine, but since this is a horror film, it's a good bet the nightmare was more than just a dream. But I don't want to give away any more of what happens. I'll just say it's a really creepy film, and I probably would have rated it higher if I were more of a horror fan. But I did like it.