Continuity: One scene has Glenn Close in bed shot from profile, and the sheet in down exposing her breasts. The film cuts to a frontal shot and the sheet is up around her neck. When it cuts back to profile, the sheet is down again.

Audio problem: The dialogue that Michael Douglas hears Glenn Close saying when he walks into his apartment to find Glenn Close talking to his wife is the exact same thing that she says just before she leaves when Ann Archer gives her their phone number.

Continuity: In the beginning, Michael Douglas tells Glenn Close that he has a 6 year old daughter. Later in the movie when Douglas is talking to his wife on the phone about the daughter missing school, she says "She's 5 years old, what is she gonna miss, Trigonometry?"

Visible crew/equipment: The boom mic is visible in the top corner of the Volvo's windshield, when Michael Douglas waves goodbye to his daughter on the street at the beginning.

Other: After Dan visits his wife in the hospital, he goes to Alex's apartment. In the scene where he's chasing Alex and crashes into the glass door, shattering it, look closely at his face and you'll see it's not Michael Douglas but a stunt double. A few seconds later when they are struggling in the kitchen, look again and you'll see the same stunt double.

Continuity: Alex takes the cigarettes out of her bag twice when she and Dan have lunch in the restaurant.

Revealing: Near the end of the film when the wife is running a bath, Michael Douglas is down stairs making tea. As he walks in and out of the living room, in the background there is a curtain that is drawn open but there is no window.

Continuity: Glenn Close changes her dress from the shot where she gets up out of the tub to the next shot where she is shot. The bloodstains on the collar are different.

Continuity: In the last portion of the film, the background shows autumn-leafed trees when Anne Archer drives downtown.  When the scene switches to the house, all the trees are lush and green in the yard.

Continuity: Iron Couple Award: Not necessarily a mistake, but Michael Douglas and Glenn Close start their frenzied lovemaking in the kitchen as a clock reads 4:45, and they're still going at it when the clock later reads 6:15.

Continuity: At the end of the film during the final confrontation when Michael Douglas first forces Glenn Close into the bath tub only her ankles are over the edge of the tub however, in the very next shot her knees are dangling over the edge.

Visible crew/equipment: In the beginning of the movie as Michael Douglas runs to answer the phone someone has knocked the overhead lamp in his kitchen and set it swinging.

Continuity: In the scene where Michael Douglas is listening to the answering machine look at the towel to the right of the paper towel rack. It is moved the next time you see it.

Revealing: As Glenn Close is being choked, Michael Douglas is holding her throat very loosely.

Continuity: There is a scene near the beginning shortly after Michael Douglas and Glenn Close meet. They go to a restaurant and get caught in a rain shower on the way. When they sit down, Michael Douglas is soaking wet. The shot changes from Michael to Glenn and then back to Michael - suddenly he is bone dry. Then the camera goes back to Glenn and then back to Michael and he's soaking wet again.

Continuity: Fred Gwynne's pipe jumps from his hand to his mouth when he and Michael Douglas walk up the stairs to his office.

Continuity: While Dan [Michael Douglas] is listening to the Alex's [Glenn Close] tape in his car, Alex is following him in her car. They both have to drive through a toll gate and slow down so as to throw coins for the toll fee into a funnel. Observe Alex: As she is about to throw the coins, we see her in close up using her RIGHT hand. In the long shot, we see her LEFT hand depositing the payment.

Continuity: The amount of blood on Dan's face, when Alex slits her wrist, keeps changing.

Continuity: When Michael Douglas is listening to a "deposition" (which is really Glenn Close calling him a faggot, etc.) using his ear phones in his new attic home (just before his wife comes up and finds him), the audio tape is not the same one as he was listening to minutes before in the car! The words are almost the same but the inflections are different.

Visible crew/equipment: In the library, right after Dan breaks into Alex's apartment, a cameraman's reflection is visible in a window as a librarian pushes a cart past it.