Factual error: Abby has trees surrounding her house yet there aren't any in Nome Alaska.
Factual error: In the beginning a calendar says 2019 April, you can see April 1 being Tuesday when actually April 1 2019 was a Monday. (00:01:10)
Factual error: When the group discovers the armoured truck in the woods, the officer says it's from the 1950's. After they open the door and are looking at the money, it looks brand new. Money sitting in the weather and heat would get mouldy and deteriorate after 50 plus years
Factual error: During the surgical operation, Dr. Heiter makes incisions on the buttocks for the triangular flaps of connecting flesh; but the flaps are pointing outward, rather than inward. The only way to graft the buttock flesh to the face of the next subject would be with the buttock incisions pointing inward.
Factual error: The Book of Mirrors is a rare medieval manuscript, yet Casey has no problem whatsoever in bringing the book to Rabbi Sendak. No library would lease such a valuable item and stealing it would also be rather difficult, as you are supposed to deposit a document and fill out a request form before you are permitted to consult any similar manuscript in any European or American library (if you are allowed at all to do so without a research permit).
Factual error: When Sylvia Ganush attacked Christine in the parking garage, because of the other cars being struck the local police would have conducted a thorough investigation including violent assault and attempted murder. They would have taped off and made spray paint marks, reviewed and photocopied the bank's surveillance footage and interviewed both Ganush and Christine. Plus, when Christine went to Mrs. Ganush's house to ask for forgiveness she is met by Ilenka. The local police would have had the household under investigation for assault and attempted murder, the two additional cars damaged would have been taped off as a crime scene, photographed and possibly checked for fingerprints along with any probable surveillance footage. The situation would have hindered Christine's ability to be at the residence to, and threatened by Ilenka.
Factual error: In the beginning of the movie after the 1st murders, when the detective is talking, he states that Grady's/David's car was bought with cash, and the purchase is untraceable because no ID is required, this is not true. A valid picture ID or drivers license is required in order to register the vehicle. Whether it is a fake ID or not, a person has to come up with some sort of ID in order to register a car. Otherwise people would just keep re-registering their vehicles under false names instead of paying parking tickets.
Factual error: Some of the scenes show trees without leaves which is correct, but several of the scenes have Myers walking through fields of crops (probably beans) in Illinois, and the trees look full, neither which could be true in late October, as the crops would be harvested or wilted by then, and the trees bare.
Factual error: As Sarah is being chased toward the mine by "Harry" she is unable to open a door and is trapped as Harry approaches. The shadow of Harry cast on the wall gets bigger as he gets closer to her. If Harry were walking in front of the light source casting his shadow, his shadow would get smaller as he walked further away from the light source and closer to Sarah. (01:40:00 - 01:41:30)
Factual error: The scene where Princess and Steven are in Chrome Skull's truck, they are trying to dial 911. They are denied access because the phone is password protected. This would never happen. Even though there is a lock on the phone, it would be automatically deactivated for 911 calls. When you lock your cell phone to protect it from unwanted usage, the phone will deny all usage EXCEPT 911 calls.