Goofs

The film's main character (Tess) owns a KJ-Series Jeep. In the city, it's the Liberty, the name the car had in North America, while at the house, the car is a Cherokee, the name the car had in Europe.

Keith offers Tess a glass of wine and she declines. Keith proceeds to remove the red gift-bow tied around the wine bottle and places it inside the large wooden fruit bowl on the table. In a following shot, the red bow is briefly visible on the table (rather than the bowl), and then vanishes again in the next.

Somehow, the Mother manages to throw herself off the water tower in pursuit of Tess and beat her to the ground to cushion her landing in spite of only falling a few stories. In reality, any extra speed the Mother might have gained by making herself more aerodynamic wouldn't have been nearly enough to cover that distance in a fall that short.

When Keith's driver's license is shown, his DOB is printed as "04 25 1988" and the license's expiration date as "08/24/2022." In New York State, both the date of birth and the expiration date have "slashes" between the numbers, so the DOB should be "04/25/1988. Also, the expiration date is always an anniversary of the recipient's birthday (as an aid in knowing when to renew the ID), so for that year it would be "04/25/2022." Finally, there is no "Indian Spring Street" in Brooklyn, or anywhere in New York City.

It is never explained how The Mother is able to get out of the house to go hunting at night, when in order to get out of the caves and basement, she'd need to get through two doors that cannot be opened from the inside.

It'd be easy to assume the man that dug the caves also created a hidden way to unlock the basement door, that way he could trap his victims in but still be able to exit himself.

Also, since the full size of the caves are never shown it is possible they contain a secret exit.

Based on the floor plan of the first floor and the direction in which the stairs lead, the front of the house would not be visible through the basement window. If in the basement, the window would be on the side of the house, not the front.

As the basement door is on the right side at the end of the main hallway and therefor perpendicular to the front door, and the stairs descend 90 degrees to the right after entering the basement door, they would in fact least back to the front of the house, thus the window being slightly to the right across from the bottom of the stairs is the correct position.

Every one of the product labels are turned backward in the grocery store.

Not all items are backward, only some. The ones that are have been placed this way intentionally. Broadcasters do this in order to avoid having to pay licensing fees on trademarked items.

During the 1980s flashback where Frank pretends to be a DWP rep to gain access to a woman's house, he touches various things in the bathroom with his bare hands, including the latch on the window he would later use to reenter the house, thus leaving his fingerprints.

The man could have wiped the fingerprints anytime between kidnapping the girl and it being discovered she was missing.

The goods in the grocery store are clearly not from the 1980s time period depicted -- too many plastic containers; modern logos visible.

During the various lock box key retrieval scenes the number 3 is repeated and order is said to matter (why she can't get the lock box open first). That style lock box the order doesn't matter and you wouldn't have repeated digits.

When the camera shows the check in instructions on the phone, part of the instructions read, "Insert code 8331 into TO the lockbox" (my emphasis to highlight the error).

One of the characters drives an electric Nissan Leaf, bizarrely it has engine and ignition sounds dubbed over its movement.

The phone number for the home rental agent was a 303 area code which is Denver, but they were in Detroit, which is a 313 area code! And the agent's office was in Detroit as shown when the homeowner went to the office to get the keys.

1. A Kia Cee'd SportsWagon can be seen in a parking garage (not sold in the US). 2. Various EUDM cars can be seen throughout the film. 3. A 2010-2012 BMW X1 can be seen in a parking garage, since the X1 didn't launch in the US until the 2013 Model Year.