Revealing mistake: At the beginning of the episode when Emma is talking with Norman, she drops the newspaper (of Bradley) in front of him. If you pause it and read the newspaper you can see the text has been repeated once for the text about Bradley and many more times for the news item below that. (00:41:35)
Other mistake: After the scene where Norman texts Bradley that he is coming over, the next shot is Norman looking at the small transcript of his messages to her. If you look, you can see that the transcript starts at 2:34 PM. However, it's nighttime. You can even see the time says 2:34 PM at the top of the phone screen. Also, the original text of 'Hey' is missing although he texted her immediately after receiving it with 'I want to come over and see you.' (00:37:40)
Revealing mistake: In the scene where Norman visits Caleb at the motel on his own, after hearing Norma and Dylan argue, he gets into an argument with Caleb. Norman then pulls a knife out high above his head, at which point you see it is a prop/rubber type knife. The handle aimed at Caleb but the force Freddie Highmore has used to pull the knife up and back causes the blade to bend and aim toward the ceiling.
Audio problem: After Deputy Lin drops the line "we'll get the results back fast," Sheriff Alex Romero responds with "I'm not sure how much nail clippings are gonna tell us." As he sits down, his mouth movement matches the audio, but when the angle changes, his mouth isn't moving at all. (00:09:55)
Visible crew/equipment: After Norman runs from the men that have him captive, Norman is dragged back to The Box. As he is being dragged you can see the mic cord across his stomach.
Continuity mistake: In the woods after Norma takes the gun away, as she's talking to Norman; her hand changes between shots from resting around his neck to around his ear, with her thumb placed in from of Norman's ear. It changes about 6 times.
Continuity mistake: When Norma is eating at the diner with the college professor, she is eating a burger halfway through. Shortly afterwards the burger is completely new, intact. (00:19:53)
Continuity mistake: In the V.I.P. room of the strip club, the dancer straddling Norman stands up. In the next shot shown in the mirror, the dancer stands up again.
Refraction - S4-E5
Continuity mistake: When Chick delivers the window he uncovers it. When he leaves it is covered, then uncovered and recovered again.
Continuity mistake: Norma reaches over to touch Chick's walking stick with her right hand, but the next shot shows her using her left hand.
Factual error: When Dylan gets a call on his cell phone, it's from an 8-digit Costa Rica number, but caller ID shows +1 506 2555 0122. +1 is the US international code.
Continuity mistake: Once Chick leaves after unveiling the stained glass window, the protective packing keeps moving position between shots while Norma is speaking with Alex.
Continuity mistake: After Chick leaves, Alex approaches Norma with his arms outstretched. The immediate shot from Alex's rear and his arms are at his side.
Continuity mistake: During Norman's hypnotherapy, he remembers approaching his Dad as he is passed out on the table, and his Dad's right arm is at his side. As Norman comes abreast of his Dad, his Dad's right arm is now on the table.
Continuity mistake: When Alex meets Rebecca in the restaurant and slides her the key, her hands are down. The immediate shot after and her right hand is holding a cup of coffee.
Continuity mistake: Norma's hands change from clasped to unclasped several times as she is speaking with Dylan in the Bates house.
Unfaithful - S4-E8
Continuity mistake: From her left side, Norma is fiddling with her wedding ring while lying in bed with Norman, but her hands are separate in the view from her right side, then playing with her ring as the shot switches back to her left side.
Continuity mistake: When Dylan confronts Norma with the earring of Emma's mother, he is holding it aloft in his right hand. Shots from Dylan's right rear and his hand is at waist level, the next shot from the front and it is held aloft again.
Revealing mistake: Norma is driving her car as landscape and cars traveling opposite her flash by. In her driver side mirror, there is no reflection of the cars passing by, the road, or any landscape. The mirror is blank.
Revealing mistake: The open eyeballs of Norma Bates' corpse move as Norman holds her head in his hands.
