Factual error: The present day "Grimsby" train station shows electric wires and trains. The real Grimsby only has diesel ones.
Factual error: Jackie is handling medication vials and taking a pill. Some of the vials have childproof "palm and twist" caps, but they were not invented until 1967. (00:48:00 - 00:49:00)
Factual error: A bullhorn can be heard in the background off-screen during a battle with the zombies, even though the movie takes place during Victorian times. (01:19:30)
Factual error: The movie puts a caption in the prologue "January 2013." Later the protagonist puts the hammer he received by the mysterious delivery right on top of a newspaper, a copy of "Mid-Day" with a retouched opening article (related to the movie murder of course) but headline news with a Sunil Gavaskar quote that dates it as a December 2015 edition. (00:03:20 - 00:10:10)
Factual error: Curiously enough, Michelle's mess in the bathroom with the self-tanning spray seems to be mostly made by footprints everywhere (but you don't tan your palms and soles, and the bottom of the foot is what she is using to lean on the wall anyway) while the spray she continues to apply does not color the tiles and towel in the slightest and nothing drips from the smooth surfaces.
Factual error: Viggo is "playing" the bagpipes on the wrong side. They should be under his left arm, not his right. He is also not blowing hard enough to make the required sound. They sound good, though.
Factual error: In the scene when they are locked in the garage, they attempt to use vehicle air bags to propel themselves through a garage vent in the roof. It is absolutely impossible for a air bag to deploy by jumping on it. A air bag requires specific battery voltage and resistance supplied by a air bag control module to deploy a air bag. The physical act of jumping on it will not deploy it.
Factual error: There would be no room for a thumb drive inside of a real Rubik's Cube due to the way they are constructed. When dismantled, the individual moving parts are quite small. It would certainly be possible to construct a facsimile of a Rubik's Cube that would have enough room, but it wouldn't be a fully functional puzzle the way it was in the film.
Factual error: When Joe and his girlfriend, who is also Albert White's mistress, walk through the hotel room kitchen, that whole kitchen, is not a 30's era kitchen. It even has a convection oven and a blast chiller, pan racks, etc. that are more from this time.
Factual error: When Pete is riding on the back of the school bus and jumping on top of the bus in the background a New Zealand style Give Way sign is seen and also on the left hand side of the road. The film is set in the USA so this should have been on the right hand side of the road. (00:34:00)
Factual error: At the book signing, the store features books who are not from the correct timeframe but from the time when the movie was shot in late 2015. Examples include a book of baby names with a big 2016 on the cover, on a shelf right when Betty appears, or "The Complete Discworld Atlas" by Terry Pratchett, between Anthony Head and Beth Goddard in their close-up during James' speech. (01:34:35)
Factual error: Tommy states that Jimson Weed is a paralytic, but it is not known to have this property. It is however a powerful hallucinogen and deliriant.
Factual error: The girls are looking through a rather wide gap between the door and the door-sill. If a gap were that wide the door lock would not be very secure, and just a little force would open it. (00:19:25)
Factual error: Lobbyists (or any other private citizen) are not subject to Senate Ethics rules. Only actual senators are. Sloane committed no offence in organising an expensive vacation for a senator. The senator did by accepting it, though.
Factual error: In the wedding and arrest scene the U.S. Customs Service officials have police attack dogs. The U.S. Customs Service only has drug detection dogs. (01:57:00)
Factual error: For the third movie in a row -at least they are consistent - Maggie introduces herself as Detective of the SFPD, but detectives are not referred as such, but as Inspectors.
Factual error: The open credit sequence takes place at the Atlanta Airport (Hartsfield Jackson), signs are throughout the Delta terminals, Boston Airport announcements are dubbed in until we see John Cusack come off the airplane.
Factual error: The presidents of South Africa, South West Africa and the Rhodesias all object to Seretse and Ruth's marriage. But the head of state of all these countries and territories at the time was King George VI. None of them had presidents.
Factual error: When the boy sends the letter, it already has a postmark.
Factual error: Toward the end of the movie, we see a B-2 Spirit releasing bombs over the town. This is very unlikely, as this is probably the most expensive aircraft to operate in the USAF arsenal, and it has only 20 of them. There is no reason to use it over an area with no hostile enemy fire, when much cheaper and more available aircraft can to the same task.