Continuity mistake: When Karen and Detective Norris arrive at Johns home, Karen runs to John, who is lying on the floor, bleeding, and she kneels down to speak to him. In one shot, she kneels and her arms are by her side and her handbag hangs over her left shoulder. It cuts and now her left hand is resting on Johns neck, and her handbag has disappeared from her shoulder. (01:02:45)
Continuity mistake: When Karen talks to John as he's dying on the floor, sometimes Johns hand is on Karens arm and sometimes it isn't. Also, Johns hands are covered in blood, yet when he touches Karens coat no blood is there in following shots. (01:02:45)
Continuity mistake: As Andy talks to Dr. Ardmore through the bars in the door at the institution, sometimes Andy's right hand is gripping the wooden door, sometimes not. (01:03:55)
Continuity mistake: When Chucky peers through the window of the institute, he sees the keys on the table. The black telephone on the table moves from being against the wall, to sitting out halfway on the desk between shots. (01:04:25)
Continuity mistake: When Dr. Ardmore is trying to give Andy the injection, the syringe he has is in his left hand, then disappears when he tries to take Andy's coat off, then reappears in his right hand. (01:06:30)
Continuity mistake: When Dr. Ardmore tries to give Andy the injection, Andy struggles from his grip and then grabs his glasses from his face. Then in the next shot of him, his glasses are back on his face. In the following shot they've gone again. (01:06:45)
Plot hole: After Chucky electrocutes the psychiatrist at the hospital with Andy there witnessing it, all of a sudden Andy is at home on his own barricading himself in then hiding out waiting for Chucky to turn up. How did Andy get from the hospital to his home considering no adults were with him? (01:07:00 - 01:08:40)
Suggested correction: This is a question, not a plot hole. We already saw Andy made his way to Eddie's house on his own. We just aren't shown what he did to get home.
Continuity mistake: When Chucky is electrocuting Dr. Ardmore, blood comes out of his mouth and eyes. Yet when Dr. Ardmore finally dies, there is no blood on or around his eyes. (01:07:15)
Continuity mistake: After escaping from the institute, Andy goes back to the apartment. When he gets through the front door, he picks the big blue rug up from the floor and tosses it to the right of the door in a heap, then drags a bench and pushes it against the front door. Yet later, Karen and Detective Norris arrive at the front foor, then smash through it. When they smash through it, Norris rolls to the floor and you can see the big blue rug now laid out perfectly in front of the door. (01:08:25 - 01:12:45)
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)
Revealing mistake: When Andy is hit by the baseball bat by Chucky you can see that the bat doesn't make contact with him. (01:11:20)
Continuity mistake: In Karen's apartment, Mike Norris gets slashed on the back of his leg, well below his knee, by Chucky with his knife. Yet later in Karen's room, Mike makes out as if the cut is well above his knee, and that is where his leg is bandaged. (01:12:55 - 01:21:40)
Continuity mistake: In the apartment, Chucky nearly transfers his soul into Andy, until Karen and Mike come and save Andy. Karen then takes off her coat and puts it over Andy, who lays on the floor. In a wideshot, when Mike gives Karen his gun, the coat lays about halfway up his body, yet when it cuts to a closeup we see the coat laying over his body all the way up to his neck. (01:13:10)
Continuity mistake: When Mike Norris opens Karen's bedroom door, looking for Chucky, the camera pans around Karen's room and on top of her TV you can see a wicker basket, some books and a vase. Yet later when Chucky finally gets into the bedroom and chases Karen and Andy, and in following scenes, the vase has gone from the top of the TV. (01:13:25 - 01:18:20)
Continuity mistake: In Karen's bedroom, when Chucky is shot in the leg he flies near the window, and there is a dresser table right beside the window. But minutes earlier, when Mike entered the room and the camera panned around the room, the dresser table was a couple of feet away from the window. (01:13:30 - 01:14:15)
Visible crew/equipment: When Karen Barclay has Chucky trapped in the fireplace, and she is sitting on the floor holding the door/cage thing, you can see the puppeteer's hand controlling the Chucky puppet. (01:14:30)
Continuity mistake: After Chucky is set alight, as he knocks down the fireplace guard you can see both his shoes have come off. In the following shots as he climbs across the sofa, his shoes are back on. (01:15:35)
Continuity mistake: Karen, Andy and Mike are shut in Karen's bedroom and Chucky has the opportunity of getting into the bedroom via two doors - a door leading to the hallway, or a door leading to the bathroom. The door leading to the hallway has a key in it, on the side of the door facing INTO Karen's bedroom. Yet later, Chucky runs down the hallway facing the outside of Karen's bedroom door, and first there is no key in the keyhole. Yet when Chucky smashes the door open, there is now a key in the keyhole on the outside of Karen's bedroom door. (01:17:20 - 01:18:15)
Continuity mistake: When Karen struggles to keep the door shut, as Chucky tries to pull it open, Chucky stabs his knife through the door, cutting Karen's hand. Between shots the hole made by the knife gets mysteriously longer, and all the holes Chucky makes in the door seem to change shape/size/location. Also, when Chucky stabs through the door, cutting Karen, a small stain of blood is left on the door. Between three consecutive shots the blood is there, then disappears then reappears. (01:17:45)
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)