The poster for this film is a RIPOFF
Here Comes the Devil (2012) DVD Art:
http://cinapse.co/wp-content/uploads/2014/03/HereComestheDevil.jpg
Devour (2004) DVD Art:
http://portugalfulldvd.com/wp-content/uploads/2013/09/DeVour-Capa.jpg
I was thinking the same thing. Immediately thought of Devour when I saw it.