Can I ask for the name of this movie I watched more than a decade ago?
It was a crime drama
The protagonist, a man, was instructed to “investigate” a woman, who is suspected of a crime, or wrongdoing.
However, on the process he was “seduced” by the woman, even killing his colleague/boss for her.
In the ending, he was arrested. The woman, who was free, with no evidence against her, left him to his fate. She met him when he was brought in for arrest. However, he took the gun of one of the police/detectives and kills her out of spite.
One or more details I have described might be slightly off. But the general plot is just as described.