Trash. It was an utter waste of my time that left me with more questions than answers ( because it didn't answer any questions in the first place. )
I know the movie was vague on the details on purpose, but it annoyed me and my fellow watchers to no end that there was so little world building.
What is this plague-like illness?
How did they know to escape so fast?
What does the rest of the world look like?
Where does their never ending water supply come from? ??
WHAT comes at night????
How was the dog killed? Humans? Orrr?
Who really opened the door?? WAS it Andrew??
I kept waiting for a climax that never happened, because what the main family did at the and was no different then what they hadd been doing the entire movie: killing the sick.