Plot hole: Andy is suspected of having killed Eddie Caputo, because he was at the scene when Eddie's house blew up and Eddie was killed. But there are glaring things that go unquestioned: None of the cops seem to think it's strange that a six-year-old kid would travel by himself so far to some random house in order to blow it up. The South Side neighborhood where Eddie lives is halfway across the city from Andy's apartment. How did Andy know where Eddie lived? How do the cops think he even knew Eddie at all? None of them address this most puzzling problem.
Continuity mistake: Opening scene where Chris Sarandon is chasing Brad Dourif into the toy store. During the gunfight, Sarandon has gloves on. As he enters the store he is wearing gloves. The next shot, the gloves are off. The next scene, the gloves are back on and he takes them off by biting the fingertips and pulling them off. (00:01:50)
Continuity mistake: When Andy pours the cereal, and then the milk, there is cereal on the counter, to the left of the bowl. There is loads of cereal on the counter, then when Andy puts the burnt toast onto a plate, there is much less cereal. Then when he takes the tray from the counter, there's now loads of cereal on it. (00:07:25 - 00:08:15)
Continuity mistake: After Maggie has been killed, on the same night Karen talks to Andy about Chucky, telling him that he's just a doll. Karen then tucks Andy in bed. As she tucks him in, Chucky is on the right side of the bed and is falling off of the pillow, down by the side of it. Yet when it cuts to a closeup, Chucky is now perfectly positioned in the centre of the pillow. (00:32:10)
Continuity mistake: Between shots when Maggie falls out of the window, the length of the wall in between the three windows increases. In the first shot the wall in between each window is half a brick long, In the wideshot the wall has increased to over a brick long. The whole arrangment of the bricks around the windows differs - obviously two different sets. (00:23:25)
Continuity mistake: When Andy returns to the apartment, he goes to his room and shuts himself in his spacious cupboard. In the cupboard there's a pile of toys including a red remote-control car, a baseball bat etc., and between shots the pile of toys changes. Eg. when Andy looks at the pile, the baseball bat is totally exposed, yet when he picks up the remote-control car the bat is wrapped in a sweater. (01:09:35)
Continuity mistake: When Chucky's fried, decapitated body comes out of the vent and grabs hold of the policeman's neck, the policeman whirls around and knocks a basket and another object off of the TV. The shot goes to the other three, but when it goes back to Chucky and the cop, the items are back on the TV, untouched. (01:21:20)
Plot hole: How would little Andy know how to get from the mental hospital to his house all alone?
Visible crew/equipment: When Chucky has the voodoo doll of John, he walks along, then says "And you have a date with death!" After saying that, he turns, prior to stabbing the voodoo doll. After he says it, and turns, you can see the large, bald, shiny head of a puppeteer, crouched behind him!! (01:01:55)
Continuity mistake: When Andy is about to brush his teeth, Maggie takes all of the bowls and plates from beside Andy's birthday cake and starts putting them away in the cupboards. Then a few shots later, Maggie walks back to the birthday cake and picks up some more bowls/plates, which have appeared beside the cake. (00:16:10)
Continuity mistake: Andy puts Chucky in a rocking chair that is missing a runner on one side, then he goes for a tinkle. Yet we then see Chucky has gone from the chair, and the chair is now rocking, with both the runners intact. Then later when Andy returns the runner is missing again. (00:35:40 - 00:37:10)
Continuity mistake: In the opening shot of the scene of Andy's birthday, the camera pans across the Barclay's living room and stops in front of the TV. The TV and cabinet sit right beside the window and curtain. Yet later when Andy looks at the Good Guys Doll Advert from the kitchen, the TV and cabinet are about two feet away from the window and curtain. (00:06:30)