Continuity mistake: When Nick and Gus are waiting for Catherine to get changed, out of the corner of his eye, Nick sees Catherine step, naked, into a white dress, then, again, she steps into the same dress.
Continuity mistake: No one goes near it but during Sharon Stone's questioning at the police station the brown coffee cup in front of Wayne Knight rotates between shots. (00:25:15)
Continuity mistake: On Jeanne Tripplehorn's desk, there's a large spherical polished rock that has been moved around between shots as Michael Douglas has his first interview with her. (00:14:00)
Visible crew/equipment: When Michael Douglas pulls his car in front of Jonny Boz' house after the initial murder scene policemen on the far corner can be seen directing traffic away from the movie set, at the top of the hill. (00:04:10)
Continuity mistake: When Sharon Stone sits down for questioning at the police station, a black folder on Wayne Knight's desk moves next to the brown coffee cup between shots. (00:24:55)
Factual error: The road where the cops drive on their way back from the beach - where we see San Francisco in the background - is a dead end. It does not lead to Stinson Beach.
Continuity mistake: As Sharon Stone sits through questioning, the retractable light on the right of the camera is moved to the side toward the end of the scene without anyone going near it. (00:28:40)
Continuity mistake: In an overhead shot back at her house, Sharon Stone walks away from her pool towards her car which is in total shade. In the next shot as she gets in the car she's in sunlight. (00:39:35)
Continuity mistake: When Michael Douglas and his partner are in the diner, the cap on the Tabasco sauce bottle is off. A second later, it is on.
Continuity mistake: At the end of the movie Michael Douglas goes back to his apartment to find Sharon Stone waiting for him and the chair and the items on the kitchen table move between shots without anyone going near them. (01:59:30)
Continuity mistake: Jeanne Tripplehorn walks into her apartment and Michael Douglas is there asking questions about her and Sharon Stone in college. If you look closely the pillows on the couch on the left of the screen move from the time she opens the door to when she walks into the apartment. (01:38:35)
Continuity mistake: In his office, Michael Douglas looks up Hazel Dobkins' name on the police computer. Gus Moran comes in to speak to him and the pencils in the pencil holder move between shots without anyone going near them. (00:45:35)
Audio problem: After Jeanne Tripplehorn is killed, Michael Douglas is back at the police station and Jack the Internal Affairs Investigator says to the black investigator, "No report from Berkeley, nothing at all about Salinas". If you look closely at his lips he's saying something else. (01:56:40)
Continuity mistake: As Michael Douglas chases Sharon Stone down the highway his car almost has a head-on collision with a speeding bus and if you look closely in the second shot that we see of the bus, it's not moving. (00:41:05)
Visible crew/equipment: Michael Douglas kisses Jeanne Tripplehorn in her apartment and the shadow of the camera can he seen on his shirt in the extreme close ups. (00:36:00)
Continuity mistake: In the first scene of the movie Sharon Stone holds the end of her white silk scarf in her right-hand. In the next shot the end of the scarf is draped over her right hand. (00:03:25)
Continuity mistake: In the scene where Rocky and Nick are talking in the bathroom you can see Nick's back in the mirror - he has two nasty looking scratched up areas of bare skin on his back - then when he turns and returns to the bedroom you can see that he now only has a couple of superficial marks.
Revealing mistake: Michael Douglas almost has a head-on collision with a bus as he chases Sharon Stone down the highway. If you look closely as he slams on his brakes, there are many skid marks in that exact same spot in the road from previous takes. (00:41:05)
Continuity mistake: At his apartment Michael Douglas takes his sunglasses off and puts them down on the counter where Sharon Stone later breaks up a big hunk of ice for their drinks. The glasses rotate 45 degrees throughout the scene without anyone going near them. (01:04:00)
Revealing mistake: When Michael Douglas pulls his car in front of Jonny Boz' house after the initial murder we hear him come to a screeching halt. If you look closely, perfect tire skid marks can be seen in the exact same spot on the road in front of his police car before it comes to a stop. (00:04:15)
Answer: There's no definitive answer to this and the ending is deliberately ambiguous and open to interpretation. The audience is left to speculate whether or not Catherine kills Nick, or if she intended to kill him but changes her mind because she loves him, or intends to kill him at a much later time, and so on.
raywest ★