Continuity mistake: Miss Kringle's head is canted up and to the right as she lays on the gurney in the morgue refrigerator, but when Edward Nygma pulls her out, her head is facing straight up. Subsequent shots of her in the refrigerator her head is canted up and to the right.
Continuity mistake: While Lieutenant Granderson is being escorted around the compound and walks to the class, she is wearing O-3 rank (two silver bars) on her collar, despite never being promoted during the show to this point. Later on in the episode, when she is talking to her mother, she is wearing O-2 rank (one silver bar) again. (00:13:35 - 00:34:15)
Continuity mistake: As the detectives are talking to their captain about the bank robbery, in a shot from behind the captain he takes his hands off his food and clasps them in front of him. The shot cuts to his front as he starts talking, and he moves his hands and clasps them again.
Continuity mistake: Most of Season 1 takes place in January of 2006, while Season 2 takes place in March of 1979. Molly mentions near the beginning of Season 1 that she's 31, and her father confirms this in episode 10 by mentioning that she was 4 years old during the events of the Sioux Falls massacre (season 2). In season 2, Molly's mother mentioned in episodes 1 and 4 that she's 6. It's also revealed in a flashback scene in episode 10 that she graduated high school in 1991 (most people are 17 or 18 when graduating high school). If you do the math, you'll see that there's an inconsistency in her age between Seasons 1 and 2. Apparently, 2 years were added to her age in Season 2.
Continuity mistake: During the street scenes it appears to be fall with leaves on the ground, grass green and streets and sidewalks dry. However, when police raid the park worker's house there is snow on the house roof and on the ground. When the police stake out the same house, there is no snow on the house roof or ground. (00:36:00 - 00:41:00)
Continuity mistake: When Molly is in space, alone, a man she knew is on The Other Side of a door that has a circular window in it. The man uses his finger to draw the words "HELP ME." When we first see the words, they are legible and about a third of the way below the top of the window, but the next time the words are much higher up and hard to read, and the third time they are now back to the original place.
Continuity mistake: Fet is in the sewer looking for rats and encounters a group of infected. He is holding a handkerchief to his face with his left hand to mask the smell. He has his flashlight in his right hand, and pulls out an iron bar with his left. As the camera angle changes, his left hand is again covering his mouth with the handkerchief (no iron bar), then the angle changes again, and he's holding the iron bar again. (00:35:05)
Continuity mistake: In the sit room, when the president is trying to decide whether to intercept the smugglers' aircraft, the local time displayed On the Clock in the background jumps from 19:12 to 19:58, back to 19:12, then to 20:13, then to 19:08. It then jumps to 19:53, then 19:59, then back to 19:15, then to 19:02. It then jumps to 20:00, before going back to 19:15 and finally finishing 19:02. All in the space of about 2 minutes of ‘real time'. (00:01:10 - 00:02:45)
Continuity mistake: When David Wilson is talking to his son in the garage, his head is turned towards his son, then in one shot it's instantly tilted down, then instantly back towards his son in the next shot. And after the shot goes back to where his head is turned, he says "sorry" without his mouth moving.
Continuity mistake: When the family is on the plane taking their seats, the wife goes to sit with her husband and sets her purse and clothing onto the seat in front of them, however you see the clothes slip off the seat and only the purse remains. In the next shot of the seat in front, the clothes are on the seat on top of the purse, without any character picking them up.