Continuity: When Norman is putting Marion's body in the trunk of the car, it's almost dawn, but, when he's sinking the car in the swamp it's late night again.

Deliberate "mistake": When the CA. trooper is at the front of her car, the Arizona license plate is shown. In 1989, Arizona began issuing a single license plate and that plate is always on the back of the vehicle. This is deliberate, as the remake follows the original movie shot by shot, and there the trooper checks the front license plate.

Continuity: When Marion searches for a place to hide the money, the lamp on the nightstand is over to the left side. However, when Marion places the newspaper on the nightstand, the lamp has moved to the center.

Continuity: After Marion is stabbed in the shower at Bates' Motel, she slides down the wall inside the bathtub As her shoulder moves, the wall has blood on it behind her. In the next sequence, when she falls over, the blood is not on the wall anymore.

Deliberate "mistake": As a homage to the original; when Norman carries Marion's dead body, wrapped in the shower curtain to the car, you can see her bra strap through the curtain.

Deliberate "mistake": The Volvo that Marion buys has a current California license plate with the number NFB 418, which matches the number from the original movie - but at the time, California plates would have had another digit before the letters; probably a 3, i.e. 3NFB418.

Visible crew/equipment: When Marion is dead, you can see the camera panning back reflected in her eyes.

Continuity: Marion gets into the bathtub/shower, and unwraps a bar of soap, throwing the wrapper down into the tub. Later when Norman is cleaning the bathtub, the wrapped has vanished.

Continuity: When Norman is spying on Marion through the holes in the wall, the long shot shows Norman's face about a foot away from the smaller hole. In the closeup, his eyeball is right up against the smaller hole on the outer sheetrock wall. When we return to the long shot, he's back to a foot away.

Revealing: In the stabbing scene's of both Marion Crane and Arbogast; as the knife is withdrawn repeatedly, the knife always stays clean and does not receive any blood on it.

Continuity: When Norman shows Marion her room, the bed that is reflected in the mirror (that Norman walks past) doesn't have a nightstand next to it. However, when Norman and Marion stand in front of the mirror and talk, there is now a nightstand next to the bed.

Continuity: When Norman comes out of the room to move Marion's car, you can hear the room door close but you can see that the door is not closed all the way (you can see light at the top.) He moves the car and now the door is closed tight.

Other: When Norman Bates is wrapping up Marion' body in the shower curtain, you can see her feet sticking out. Just before he goes to lift her body, she puts her feet together.