Gau ngao gau

All the good reviews you're reading - those are from big HK cinema buffs, and they are correct from their point of view; it's a lot better than the majority of the cop/gangster films coming out of HK. The plot has already been reviewed, so I'll skip that. It's enough to say that this film does have a plot, much more so than I expected.

On the other hand, this isn't some fine piece of film making compared to what's available from the rest of the world. The characters are so totally unbelievable it will make you cringe. Informers are always scared wimps to be slapped around, cops are tough guys who do the slapping and the hit man is a super tough bad guy who talks little and kills a lot. If informers were so easily intimidated, why would other criminals have anything to do with them? If cops were that uniformly brutal they'd be arresting each other, because no one else would live in such a society. The hit man in this case at least had an excuse for being taciturn and psychotic.

If you really like Asian cinema, especially HK cinema, then you'll like this one a lot. If you're not a big fan, better go rent something else.