Revealing mistake: When Dracula flies into the room to stop his brides from devouring Jonathan, the board carrying him is visible. (00:34:10)
Revealing mistake: When the kids are burying Gus, his supposedly dead face flinches when they shovel dirt on him.
Continuity mistake: When Pinhead is just about to start killing everyone in The Boiler Room nightclub, a man catches the first hooked chain that Pinhead unleashes. Yet when you look closely as you see the man holding the chain there is no hook, but a piece of wire.
Revealing mistake: In the part it shows Ash getting sucked into the time portal you can see the wire he is hanging from. (00:02:45)
Continuity mistake: Just after the doctor started the post mortem on that little girl, the front of his gown is covered with blood. Yet, a few seconds later, after the two other guys appear, his gown looks better, with less blood. And during the whole post mortem scene, the blood spot actually changes its size a few times. (00:17:55 - 00:19:55)
Continuity mistake: When Buffy is out shopping for her dress and Pike is on his bike beside her, they stop to talk and have an argument. Buffy walks off and Pike turns his bike around to drive off, but as he does this, his bike suddenly moves a few feet away from the wall he was right next to in the previous shot. (01:01:05)
Visible crew/equipment: When Helen and the Candyman are in the psychiatrists' office, Candyman flies out of the window backwards. If you look very carefully, you can see the harness that pulls him backwards.
Revealing mistake: This is toward the end of the movie. The scene where Dr. Giggles has a waiting room full of his victims. If you watch closely, you will see the blonde corpse blink her eyes.
Continuity mistake: The zombie baby keeps changing size throughout the movie.
Revealing mistake: In the chase scene about an hour into the movie, Robert Loggia is shown entering the Liberty Tunnel, driving on a wet road. Note the vaulted round ceiling of the tunnel. Next, we see a series of shots of him in the tunnel, and then a shot of the sun rising over Pittsburgh as he is about to leave the tunnel. Here is the problem - the sunrise shot is taken from the Fort Pitt tunnel on a different day. Note the dry road, the barriers to the driver's left at the tunnel exit and the Fort Pitt bridge straight ahead. There is no place for the driver to make a left turn out of this tunnel. Also note that the POV is from the left lane. All the Liberty Tunnel shots show Loggia in the right lane. The next shot shows Loggia exiting the Liberty Tunnel and making a left turn from the right lane, causing a pile-up. (01:11:10 - 01:12:20)
Visible crew/equipment: When Ethan is going into the space ship, one of the critters pursues him. We then can see a man's shadow on the ground, most likely the cameraman's shadow. (01:04:15)
Visible crew/equipment: At the end when Dr. Angelo and Peter are escaping the blast, just after Angelo jumps down over the facility wall and calls for Peter to follow, for a second you can see someone holding the back of Peter's shirt to help him drop down, or it might be a rigging of some kind.
Continuity mistake: When Stone leaves the building he lives in, there is writing on the wall saying which way to go for each floor. When the killer enters the building, the wall is blank. (00:37:00 - 00:41:40)
Audio problem: When Claire is in the car about to leave hospital, she turns around to tell Emma to put her seat-belt on. Though you hear her say "fasten your seat-belt sweetheart" - her lips aren't moving when you hear "sweetheart".
Continuity mistake: In the scene where the old lady comes out of the cafe and the children come out from behind with the remote control car, she shouts at them to get away. As she turns to cross the road the children turn to follow her. In the next shot when we see them out of the bingo hall they are walking ahead as if they had never turned to cross.
Continuity mistake: When Chet and Stanley asks Irene some questions (in the café, about 15 minutes into the movie) about the murder, the cigarette Irene smokes changes a few times between the shots. Most obvious is the length of the ashes. (00:16:13)
Revealing mistake: When the attorney Ms. Lawlor is being 'hijacked' by the ghost (we only hear his voice) Grubeck in her car, it is very obvious that a person in a black ski mask and black clothes is driving the car.
Continuity mistake: In the last scene, Tanya gets her arm cut on a piece of glass in the window by Charles, just before he turns to fight a cop. In the next shot the glass has disappeared from the window completely.
Plot hole: There's no way Dr. Lynn Waldheim's coat would have fitted Carter.
Visible crew/equipment: During the breakfast scene, when Andrea stands up, a microphone is visible. (00:15:05)