Basic Instinct is most often compared to Body Heat, a 1981 movie in which a sexy woman targets a lawyer with a shady past to play a role in her nefarious plan to murder her rich husband but then falls in love with him.
After investigating Beth's apartment, Nick returns to his apartment to find Catherine waiting for him. In a distraught manner, Catherine begins to babble about how she can't allow herself to care about anyone and how she doesn't want to do 'this' and lose Nick. They end up making love, Catherine collapsing into Nick's arms afterwards. Catherine asks Nick what they do now, and he replies: 'Fuck like minks, raise rugrats, and live happily ever after.' As Catherine's hand slowly slides down the side of the bed, she admits that she hates 'rug rats', so Nick says, 'Forget the rug rats.' She slowly, almost menacingly, turns toward him, then suddenly grabs him with both arms and kisses him torridly. As they kiss, the camera pans down the side of the bed, revealing an icepick lying on the floor.