Just now I saw French film, "36 Quai Des Orfevres". It's a story about two cops. One cop(Leo) is good cop. He believe righteousness. He loves family and friends. Another cop(Denis) has power-lust and ambitiousness. They conflict to each other for one task. Bad cop vs. Good cop? Nope, the story is not so simple.

If you like Film Noir, I recommend it. The last scene was surprisingly terrific!

http://us.imdb.com/title/tt0390808/