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Continuity mistake: When Nica and Barb are talking after Alice gets Chucky back, there are several minor back-to-back continuity errors as it cuts between Nica's closeup and the side shot with both women. Nica's mouth goes from closed to open and back a few times. Nica's arms aren't folded, then it cuts to the side shot, then it cuts back and they're folded. (We would have seen her move to fold them in the side shot.) And the direction she's facing changes subtly at least once.

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Continuity mistake: When Nica gets in the elevator to take Chucky up to Alice, when she closes the door, her right arm is suddenly fully extended to flip the switch between cuts.

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Continuity mistake: When the nanny notices that the knife is missing, right before Barb starts kissing her, the knives on the rack change when it cuts back to a closeup. Noticeably, the butcher knife from the first shot has been replaced with a much smaller standard carving knife. One of the other knives has also rotated about 20 degrees.

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Continuity mistake: When the babysitter is helping the little girl find Chucky, at one point, she puts a piece of luggage on the bed and opens it up. The paper luggage tag on the bag confusingly keeps moving back and forth between the handle of the bag and the zipper, depending on the shot.

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Continuity mistake: When the family is watching old home movies and Barb complains, "It's called 'baby-fat'!", Nica's mouth goes from closed to open between cuts, and her hand goes from being on her face to off between the same cut.

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Revealing mistake: When Officer Stanton has Father Frank's blood splash on his face, pay close attention to the second shot of him staring with his mouth open. Some of the blood on the right side of his face appears and disappears a few times in the second shot, revealing it was added digitally and there was a flub in the rendering.

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Continuity mistake: When the officer tries to talk to Father Frank at the crash site, he goes from standing to leaning forward towards Frank between cuts.

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Continuity mistake: If you look closely during the dinner scene, during the first overhead shot when the camera is rotating above the table, you can just barely tell that all the candles were burned down. They are taller through the rest of the scene. That shot was filmed last, by which point all the candles had considerably shrunk. (Confirmed in Blu-Ray commentary.)

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Continuity mistake: When Nica gets into an argument with Barb about selling the house, when Nica tosses the pamphlet on the table, the way she's holding it changes instantly between cuts.

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Continuity mistake: When Barb shows Nica the pamphlet for the assisted living centre, after Nica says "What is this?", the way Barb is holding her hands on her knees changes instantly between cuts. The teacup in front of Barb also rotates slightly between cuts.

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Continuity mistake: Sarah's mouth goes from open to closed to open again between cuts after she takes Chucky out of the box, and Chucky says, "Hi, I'm Chucky! Wanna play?"

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Continuity mistake: When Sarah pulls Chucky out of the box, the amount of packing peanuts stuck to Chucky's head/hair changes between cuts.

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Continuity mistake: When Nica's mother shuts the door after the package arrives, she rotates about 45 degrees towards Nica between cuts.

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Continuity mistake: When the delivery man hands Nica the gizmo, the sign for the package, it rotates 180 degrees between shots. (You can really tell from the direction the antenna is pointing.)

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Continuity mistake: When Nica opens the door for the delivery man, she's still opening it, but then the shot cuts and she's no longer opening it and is instead rolling forward towards the driver in her wheelchair.

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Visible crew/equipment: When Nica rounds the corner to answer the door in the opening scene, as she gets close to the door, you can see the shadow of the cameraman on her back for a moment. (It's right after she says "Well, I'm used to that.") You can also VERY faintly see it on the door a few seconds later.

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Continuity mistake: In the previous films, the Good Guy dolls always say "Hidey-Ho!" before their trademark "Ha-ha-ha!". For some reason, this movie omits that.

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Deliberate mistake: In the unrated cut, when Jennifer/Tiffany is dragging the dead maid, you can see the "dead" maid is actually holding her head a few inches above the ground so her face doesn't rub on the floor. You can even see her subtly raise and lower her head as Jennifer/Tiffany grabs her and then stops.

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Revealing mistake: Jennifer/Tiffany's maid reacts to being hit with the doll before it makes contact with her.

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Continuity mistake: After Glen kills Chucky and begins crying, the blood spatter on his face changes slightly between cuts.

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