Why must the cop do this to Nikki?
I really hate cops who do thing like that. First, he gets to sleep with the girl. Then, he killed her because she was a bad girl. I think Nikki has no plans to hurt the cop. She only wants to get the money and go someplace else. To a certain extend, Nikki falls in love with the cop.
Cops like him love to pull stunt like this. Since Nikki already has a gun, why didn’t she just shoot him? Why is it necessary to get his gun and end up like that?