I love M. Night Shyamalan.

I know his films are hit or miss, but One thing I'll get from his film for sure—and I've seen all of his films—is great acting performances.

I loved the cinematography; the use of shallow depth of field created this claustrophobic effect on me that helped me connect with the characters.

I also think the sound design is great. If you stay until the very end, after the end credits, you will hear the knock at the cabin.