Sharon Stone was 36 when this movie was filmed, although her character was supposed to be in her early twenties.
Sylvester Stallone had this to say on filming the shower scene with Sharon Stone:
"OK. Let it be known, I didn't want to do this scene because Sharon was not cooperating. We get to the set and she decides not to take her robe off. The director asks only a few of the crew to remain, and she still won't take it off. I promised her I wouldn't take any liberties, so what's the problem? She said, 'I'm just sick of nudity.' I asked her if she could get sick of it on someone else's film. She was having none of it, so I went down to my trailer, brought back a bottle of Black Death vodka that was given to me by Michael Douglas and after half-a-dozen shots we were wet and wild."
"OK. Let it be known, I didn't want to do this scene because Sharon was not cooperating. We get to the set and she decides not to take her robe off. The director asks only a few of the crew to remain, and she still won't take it off. I promised her I wouldn't take any liberties, so what's the problem? She said, 'I'm just sick of nudity.' I asked her if she could get sick of it on someone else's film. She was having none of it, so I went down to my trailer, brought back a bottle of Black Death vodka that was given to me by Michael Douglas and after half-a-dozen shots we were wet and wild."
David Fincher was set to direct this at one stage. Sylvester Stallone liked Fincher but he was overruled by the producers, because Fincher's career was still in deep freeze after the failure of Alien³ (1992) and wasn't revived until the massive success of Se7en (1995).
The scene where Tomas threatens Ray with a knife was written by Sylvester Stallone at the last minute so he could share a scene with Eric Roberts. Stallone and Roberts got another chance to play hero and villain 16 years later, in The Expendables (2010).
Eric Roberts is only two years older than Sharon Stone. In the film his character was supposed to have killed her parents when she was a child.