Looking for a horror movie, base on true event. Set in Michigan late at night, a couple in house when someone at door and the light bulb has been unscrewed. I think it's about 5 years old

The Strangers (http://www.imdb.com/title/tt0482606/)? If not, got any more info?

Thanks, that's it. Started to watch late at night and too scared to continue, but forgot the name.

Glad to help.