Visible crew/equipment: When Frank enters his office a boom mike dips into view for a split second, when the camera pans away from his co-workers laughing about the American Superstar contestant.
Continuity mistake: Mariso Golfetto is beginning a tirade about immigrants and assaults on women. A woman gets her drink from the barman, picking it up with her right hand, completing the movement. Reverse shot, and not only she repeats the gesture and still needs to pick up the glass, but she does it with her left hand. (00:07:00)
Revealing mistake: When Anna's looking at her reflection in the mirror she starts rubbing her face vigorously. Look at her right cheek and you'll it's red before she rubs, result of multiple takes.
Continuity mistake: At the start of the film, when the bus driver helps the man in a wheelchair onto the bus, his hat disappears then reappears. (00:05:00 - 00:06:00)
Continuity mistake: In two scenes featuring close-ups of the fireplace days apart, the same logs are burning.
Revealing mistake: While Lynn is driving, the scenery outside the driver's side window goes white a few times and, other times, with intermittent specks of green tree leaves/shrubs. The white-outs are too low to be representing the sky. For a period of time, the lower third or so of her side window is a horizontal white bar. (00:02:20 - 00:03:38)
Continuity mistake: Coulson has just entered the supermarket and is holding 2 donut packages in each hand. Watch his left thumb. In the close-up shot it is on the 'D'. In the next shot, it is below the letter on the red band on the plastic wrap. (00:00:55)
Continuity mistake: After Sarah finds her father in the bedroom and goes downstairs to get help, the blood pattern on her shirt/upper breasts changes. While the movie is edited to look like one continuous shot, it was filmed in bits and pieces, and the blood pattern was not consistent in some of the shots, it seems.
Continuity mistake: Dr. Mario Tirelli at the beginning of the movie enters the clinic where he works. A blonde woman walks in the opposite direction and exits through the door as Tirelli briefly hails a nurse. At the cut, Tirelli is in the same spot as before (nothing changes in the background) but the blonde is back and with still a way to go before the door, and the nurse is far back too, with the doctor's hand not moving to greet her, in a different take entirely. (00:03:00)
Other mistake: When the evil warlock breaks his way out of the condemned house, he uses explosives to escape, but for some odd reason, the door is the only thing affected by the explosion.
Continuity mistake: When Frisson is giving the adder to the girls, the adder is going to go leave the jar through the hole but in the following shot, it is resting at the bottom.
Other mistake: When the captive begins her escape, she kicks the bed through the orange portal offscreen, but the portal only starts about a foot off the ground, so the bed would have hit the wall, rather than have gone through the portal.
Deliberate mistake: The driver's side mirror would not be able to capture the view of the store that Monique is robbing - the mirror is slightly angled towards the rear of the car, plus Arthur's car is parked too close across the street. (00:00:33)
Continuity mistake: When Laurence asks Colin for a cigarette in the screening room, he has it between his fingers when Colin lights it, but when the shot cuts, his fingers have disappeared from around the cigarette. (00:45:30)
Continuity mistake: In the scene in the kitchen when Helen is telling Joe that she is pregnant, Joe is wearing suspenders over his shoulders. As the camera moves back and forth between the characters during the dialogue, Joe's suspenders "disappear." When the camera pans out, you can see that they are now hanging below his waist.
Factual error: The car doors wouldn't protect Adam and the other police officers from being shot - they offer no protection against bullets.
Factual error: Danny Greene has a bomb placed in Shondor Birns' car. As Birns is waiting to cross the sidewalk, the pedestrian walk-don't walk sign is a modern digital sign, that was not around in 1975.
Plot hole: When the hikers heard the voice calling out for help, they were yelling "can anybody hear me" and "is anybody there" in English. Once they rescued her and they tried to talk to her, they said she didn't know any English.
Continuity mistake: Jacob's phone appears first behind the laptop and, in the next shot, right next to it. (01:04:30)
Factual error: Mallory tells Florence that the school is in Cumbria. Cumbria didn't exist in 1921. It was created in 1974 from Cumberland, Westmorland and part of Lancashire.