No visuals, but two men briefly ask their brother if he has slept with his girlfriend.

At one point early in the film the cameraman says "It's not a porno".

F*ck, d*ck, and other mild swears, though said in an intense way.

It is briefly mentioned that one of the Van Heeses has become an alcoholic since the death of a loved one.

The aliens' brief appearances are sudden and frightening.

Members of the family scream several times which can be quite unexpected and may cause viewers to jump.

The entire movie has a very suspenseful atmosphere from almost the very beginning.