Confession of Pain

But that doesn't take too much away from the "entertainment". At least not in my eyes. Of course as with the Infernal Affairs movies, this isn't so much about the action, as it is about the drama and the relationships between the characters. And if you have some of the finest (as is the case here), than nothing can go wrong. And although it's apparent from very early on, who did what, that doesn't take anything away from the movie.

Quite the contrary! Even it wasn't revealed in the movie, you would've guessed it. So by showing it, the movie tells you that it won't play any "twist" game with you. And you can enjoy the performances and the nice story as it unfolds.