Other mistake: Spencer tells Jen to meet him at sunset but when they meet, it is not sunset.
Factual error: The movie starts off saying its 2007 and Smart Cars were not sold in the US until 2008.
Other mistake: Finbar is shown torturing a victim while the victim has his head in a halo used for immobilizing a person's head. The screws to hold the victim's head tight can be seen not to be touching his head, yet the victim is still bleeding from the screws.
Continuity mistake: In the beginning when Shane and Diggs arrive at the hostage site Shane sticks a toothpick into his mouth. However, in the next shot the toothpick is missing.
Continuity mistake: When Jamie is in the bus asking Maggie to come out, the glasses on his hands keep swapping places between shots.
Continuity mistake: Near the end of the movie, Ethan tells Peter that he had his wallet all along. Peter steps forward from the car wearing his glasses. In the very next shot, they are gone and nowhere to be seen. (01:16:30)
Continuity mistake: Just before Declan and Anna are going to sleep in the B&B, when she agrees he can sleep in the same bed he is holding a pillow. He then puts the pillow on the bed and the pattern on his and hers pillows are on the left side, however the next scene shows that his pillow pattern is on the right. (00:56:55)
Continuity mistake: In the scene where Aldous gives Arron the adrenaline shot, the needle changes from being in his arm to being in his shoulder.
Revealing mistake: During the scene where Jennifer Lopez does not have her body pillow, she has to use her friend/neighbor as a pillow so she can sleep. The nightshirt Jennifer is wearing allows you to see the fake pregnancy belly she has on.
Factual error: When Barry swallows the car key on the way to the airport, he holds and swallows a Ford car key, yet they are driving a Citroen Xsara. (00:08:18)
Continuity mistake: When the three guys are having lunch, in one shot the traffic is at a stand still, but in the next shot seen in the reflection of the window, the traffic is moving fast. Next shot it is at a stand still once again.
Continuity mistake: In electric avenue scene, the number of wood bars the cast has to go around changes from two to four.
Revealing mistake: In the scene where Rachel McAdams goes to Patrick Wilson's office to explain why she left the bar so abruptly the night before, there are four TV monitors behind her as she does those weird charade movements. Only one monitor has a picture. The picture is of the New Jersey anchors of the job from which she was previously fired. Also, the characters in the picture never move.
Continuity mistake: The sweat stains on the phone costume keep changing when in the police station. (00:12:00)
Continuity mistake: After Rita and Eddie's fridge is repossessed they are arguing outside their flat. On the wall outside their neighbours' flat there is a wheeled trolley or pushchair hanging on the wall. This disappears and then reappears several times during this sequence of the film.
Continuity mistake: When Wally is talking to Sebastian in his bed, the latter has lost two of his bottom teeth. For most of the rest of the movie they are there. In the last scene they are gone again.
Factual error: When they are watching the prince's wedding on TV, you can see the TV-channel's logo in the corner of the screen. The channel NRK didn't start using this logo until 1996, so the program is definitely a rerun, and not the original airing from 1968 which is when this film is set.
Revealing mistake: Throughout the film the actors' breath is visible. This wouldn't be happening during the summer when the film is set.
Continuity mistake: In Joanna's bridal shower she gives a necklace to Marni. When Marni is talking to her nanny the necklace disappear between shots.
Plot hole: When Dylan enters the vampire Vargas's bedroom to interrogate him, Dylan frequently steps away from the door to let sunlight in to burn Vargas, so that Vargas will cooperate with the interrogation. Vargas is in his bed and could easily cover himself with his sheets to block the sunlight, but never does.