Movie Goof (errors in geography): Sam boards an IND line train at Franklin Avenue, which is underground. We do not see him change trains. We see a IRT (#9) train emerging from underground to an elevated station (Dykmon Street, which is uptown). He gets off a BMT line train at the Myrtle/Wykoff station, which is elevated, in Brooklyn. This trip is impossible without changing trains, also Sam and Molly lived in SoHo, which is downtown and the Myrtle/Wykoff station is in Brooklyn.
Movie Goof (errors in geography): We are told that Willie Lopez lives in Prospect Place. But when we see him go home when Sam follows, he gets off the J train in Bushwick. Also there is no J train at Franklin St in downtown Manhattan. You would have to take the 1 train.
Movie Goof (audio/visual unsynchronized): When Molly and Oda Mae climb the ladder and walk the rafters, both Molly and Carl can be heard shouting, but neither moves their mouth.
Movie Goof (continuity error): When Molly slaps Carl after he tells her to come for a walk, the shoebox containing personal things is in her left arm. The camera then goes to Sam, who walks slowly towards them, and then the camera goes back to Molly, the box is now on the floor, and she picks it up as if she had dropped it, but we do not see this, and there is no noise indicating this.
Movie Goof (continuity error): When Sam is following Willie to his apartment, Willie opens up the door and after Sam goes through the door, it automatically closes, but when Carl visits Willie, the door remains open.
Movie Goof (revealing mistake): In the very end when Sam is ascending into the light, the 1990s green screen technology is very obvious around the edges of his body.
Movie Goof (continuity error): Molly Jensen drops and damages the corner of the shoebox containing her dead boyfriends' things. In a later scene, when bad guy Carl Bruner steals the box from her closet, the box is in perfect condition.
Movie Goof (continuity error): When Sam is shot and Molly is holding him, her sleeves are covered in blood. Later, at the police station her sleeves are clean.
Movie Goof (revealing mistake): When Willie is fighting with Sam just prior to shooting him you can see that the gun Willie is using (Walther PPK or similar clone) is in the safe position (i.e. manual safety/decocker is vertical rather than horizontal). Such a gun should not fire.
Movie Goof (continuity error): When Sam is chasing Willie through the apartment and Willie hides in the bathroom, you can see the shower curtain. When they show Willie on the reflection of the mirror, is a different shower curtain.
Movie Goof (continuity error): When Ode Mae first goes to see Molly she is wearing one pair of shoes; as she turns the corner her shoes have changed colors.
Movie Goof (continuity error): When the Subway Ghost kicks the cigarette vending machine in anger, you can clearly see that the rows of cigarettes were rigged to go straight down and out the chute, which would not occur simply because the glass was broken. Also, there were also many more packs of cigarettes on the ground than could have come out of the machine, and were obviously pre-placed.
Movie Goof (crew or equipment visible): Camera and TV monitor can be seen in the bottom of the mirror in the move-in scene. Stage light equipment can be seen in the mirror soon after Carl passes in front of it.
Movie Goof (errors made by characters, possibly deliberate errors by the filmmakers): In the credits, Bruce Jarchow is credited as Lyle Furgeson, but the scene at his desk has a sign with the spelling of his name changed to Ferguson.
Movie Goof (revealing mistake): When "Oda Mae" and "Molly" are straddling the rafters, they are obviously stunt doubles.
Movie Goof (plot holes): When Oda Mae and Sam first go to Molly's apartment together, Sam tells Oda Mae the full address of Willie Lopez, which she then repeats out loud to Molly, but she leaves out the apartment number (4D). Later, when Molly repeats the address to Carl, she knows that it is apartment 4D, which is impossible because Oda Mae never relayed this information to her and she can't hear Sam.
Movie Goof (crew or equipment visible): When Carl is preparing the account for "Rita Miller", the camera and operator are reflected in the computer screen.
Movie Goof (factual errors): With the closing credits the spelling of "Cemetery Ghost" is wrong. The credits spell it as Cemetary Ghost, the correct spelling should be CEMETERY.
Movie Goof (continuity error): When Sam is getting up after trying to kick the can, the still intangible ghost bumps into the soda can, which moves.
Movie Goof (factual errors): Giving away a fraudulently obtained money order, even to a charity, would not have protected the defrauder from prosecution for the way it was obtained.
Movie Goof (continuity error): After Oda Mae gives away the check, she says goodbye to Sam and we see a group of extras crossing the street. When the angle switches to the other side of the street, we see one of the same extras (African American lady, box cut hair) crossing the street again.
Movie Goof (continuity error): Molly enters her apartment and locks the deadbolt. After being scratched, Willie runs out the door, without opening the deadbolt. When the door closes behind him, you can see that the deadbolt is still locked. The door would neither open or close.
Movie Goof (continuity error): The wet clay coating Molly's and Sam's hands.
Movie Goof (continuity error): When Sam is on the train, he is pushed violently through the rails, cabin doors, but hits his head on the last cart.
Movie Goof (continuity error): Sam arrives with Carl as Molly reaches dangerously out the window in an attempt to help the movers bring in an angel statue. She is clearly wearing denim jeans; however, moments later when she is showing Carl her latest work, she is in sweat pants.
Movie Goof (errors made by characters, possibly deliberate errors by the filmmakers): In the exchange between Molly and Lyle the bank officer, she asks him if that was Oda Mae, and wanted to know what business they had just done. Lyle tells Molly her name (Rita Miller) and said that she was closing an account. By federal law, bank personnel can never discuss the details of one customer's transaction or identity with another. However, Lyle is a "social moron," very likely to have forgotten or not cared enough about the law to keep himself from discussing it with Molly.
Movie Goof (continuity error): There are a number of inconsistencies concerning Sam touching things when his hands should have gone through. For example, when Sam is in the hospital after his murder he gets out of the chair by grabbing hold of the arm-rests to push himself up out of the chair.
Movie Goof (continuity error): SPOILER: When Molly and Oda Mae are running from Carl they lift a ladder so that Carl cannot reach it. In the first shot they have nearly pulled up the entire ladder and it is almost in a horizontal position. In the next shot, Carl grabs for the ladder as it is in a vertical position, not very far from the ground.
Movie Goof (continuity error): SPOILER: When Carl pins Oda Mae down toward the end and he has the gun on her, he cocks the pistol 3 or 4 times as he threatens to shoot her.
Movie Goof (revealing mistake): SPOILER: When Carl is being dragged away by the shadows, the wires that are helping him float are visible.
Movie Goof (continuity error): SPOILER: The length and distribution of Molly's bangs changes in the last scene with Sam.
Movie Goof (incorrectly regarded as a mistake): SPOILER: When Willie is hit by the car, his body is split in two, the spirit body that we see fall on the street, and the physical body lying on the car that the people run to help.
Movie Goof (incorrectly regarded as a mistake): SPOILER: When Carl has the knife in Molly's kitchen, it visibly wobbles and is clearly made of rubber. However, if you look closely you can see it is simply shaking, as Carl is beyond terrified at realizing Sam's ghost is real.
Movie Goof (continuity error): SPOILER: Why, once Sam has learnt to touch things, including humans, can he not dance with Molly? Despite touching Willy in his flat, Sam can only dance with Molly by getting into Oda Mae's body, surely he should have just been able to dance directly?
Movie Goof (continuity error): SPOILER: When Carl throws Molly into the rubbish bins on the rooftop, the bins fall over twice.