Factual error: In order to take delivery of the demon baby, Crowley meets Hastur and Ligur - two fellow demons - in a church graveyard, but later we find that demons cannot step on to consecrated ground without suffering extreme discomfort. Church graveyards are always on consecrated ground.
Factual error: When Klaus and Ben visit Dave at the hardware store in November 1963, they arrive in a 1965 Imperial. (00:32:48)
Glorious Five Year Plan - S3-E4
Factual error: The Boys use a Dodge Sprinter to drive around Russia. In Europe and Russia this Sprinter was only sold through Mercedes-Benz.
Factual error: When Jane is putting up the lost poster, the number to call is 1-800-saw-him. However, this is only a 6-digit phone number when it needs to be 7-digits (not including the 1-800 part).
Factual error: Will is asked by Jai to place his wrist watch - which is filled with explosives - against a wall. He does, and it somehow sticks to the vertical concrete wall. An adhesive back would have been noticed by Will, as it was against his skin on his wrist. Not to mention that an explosion in a contained space that small would have deafened them both, or worse. (00:35:05)
Pride Parade - S5-E3
Factual error: Nandor manages to fly up to space, then loses control and falls back to earth in a fireball as he reenters the atmosphere. But objects reentering the atmosphere only get hot because they're generally travelling at immense speeds, 7-12 kilometers per second. Nandor just floated straight up, then falls straight back down. When Felix Baumgartner parachuted from the edge of space his maximum speed was about 1,300 km/h, and he didn't catch fire.
Suggested correction: But it is a satanic church so Crowley can step in it.
There is nothing in The Book or the film to suggest that the graveyard is part of a "satanic church."
The church is run by Satanic nuns who are orchestrating the entire plan to switch babies.
No, it is not. Crowley has to drive for a considerable distance from the church to the convent in order to deliver baby Adam to the satanic nuns. They have nothing to do with it.