TedStixon

Continuity mistake: When Nurse Ashley takes the shoe from Madeline, Madeline's hands change positions repeatedly between cuts.

TedStixon

Continuity mistake: When Dr. Foley pours himself a drink while Nica is hypnotized, the bottle cap goes from right in front of him to about a foot to his left instantly between cuts. It then reappears on the bottle a few shots later despite him having not put it back on.

TedStixon

Revealing mistake: When there's a close-up of the needle going into Nica's arm, you can tell it's a fake needle - the tip is just flat, and there's no hole, unlike a real hypodermic needle. You can also spot where the fake needle "retracted" in the center.

TedStixon

Continuity mistake: When Foley turns to Nica with the needle, in the shots over his shoulder, he's holding it below shoulder level (to the point it's not visible on camera), while the shots facing him, he's holding it at shoulder level.

TedStixon

Continuity mistake: When Foley is getting the needle ready to hypnotize Nica, right after he squirts a little out, the amount of fluid in the needle is suddenly about 75% smaller instantly between cuts. (It's not because he just squirted some out; it's instant between cuts.)

TedStixon

Continuity mistake: When Nica is trying to tell Dr. Foley about how she thinks both dolls are alive, when he leans forward, the lighting on his face changes from the side shot to the front shot.

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Visible crew/equipment: When Andy gets "Buzzcut Chucky" out and drives away, you can see a very clear reflection of the set lights in the side of his truck.

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Continuity mistake: When Claire is decapitated, in the first few shots, it's clear her head is going to roll away towards the door. However, after a quick cut, we then see it roll in the opposite direction towards Chucky.

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Deliberate mistake: When the cannister rockets through the ceiling window, the pieces of glass from the initial impact never fall down. Nor are they on top of the window in the next shot. They just sort-of vanish. Additionally, the cracks don't match from the first shot to the second time we see it. There's suddenly less cracks which is odd because it's a digital effect.

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Continuity mistake: When Chucky slams the compressed air cannister down, he goes from having his eyes squinted to wide open instantly between cuts.

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Continuity mistake: Claire goes from facing her head up to facing sideways when Nurse Ashely comes into the room after she's strapped down. In the very next shot, she's facing up again.

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Continuity mistake: Carlos' hands go from on Claire's strap to off it between cuts after he clips the final strap while tying her down.

TedStixon

Continuity mistake: The first strap Carlos puts around Claire moves from above to below her beltline, and then back again between cuts as she's being strapped down.

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Continuity mistake: When Nica starts pounding on the window to try and get Madeline's attention, she goes from hitting it with one hand to both between cuts when the camera cuts outside.

TedStixon

Visible crew/equipment: When Chucky flips off Nica from outside, if you look closely, for about one second, you can see the curly, auburn hair of a crew member on the right side of the screen ducking behind the actress.

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Revealing mistake: When Claire is bitten by Chucky and she pulls her sleeve up, you can see where the prosthetic is blended into her arm in the first wide-shot. In both that shot, and another shot, you can also see the prosthetic unnaturally "bulging" slightly. It's also very visible in the scene where she's strapped down and Dr. Foley injects her.

TedStixon

Continuity mistake: When Madeline goes outside with Chucky, as she walks through the door, she's holding Chucky tighter to her body between cuts.

TedStixon

Continuity mistake: After the doctor burns Chucky's hand, when Malcolm leaves the room, there's a tuft of hair on Nica's forehead. When the camera cuts, it's suddenly brushed aside.

TedStixon

Continuity mistake: When Carlos is getting Nica water in the morning (after she finds the message from Chucky), her mouth goes from open to closed, then back to open between cuts.

TedStixon

Visible crew/equipment: When Chucky finds Nica with her wrist slit, you can see a light reflected in Chucky's eyes, even though the room is dark. Obviously, a set light.

TedStixon