10 Scariest Movies You Can Watch FOR FREE On YouTube Right Now

10. Grave Encounters

As much as the found footage genre might seem thoroughly played-out, it does nevertheless periodically serve as a fertile medium for low-budget filmmakers to express their scrappy creativity.

One such example is 2011's Grave Encounters, in which a reality TV crew lock themselves inside a haunted psychiatric hospital, which goes about as swimmingly as you'd expect.

If you can forgive a few dodgy CGI moments, this is one of the leaner and more effective found footage joints out there, taking a familiar formula and elevating it with slow-building suspense and an utterly nerve-jangling, dread-soaked payoff.

Making the most of its eerie central location and offering up a few unexpected twists, Grave Encounters is so much scarier than its daft title might have you believe.

The less said about the critically mauled sequel, though, the better.