The best film that I have seen is"The departed",It is a good thriller,but it isn't a normal thriller,because in this film there is a departed into mafia,and a departed into police.
The story start when Bill go to the police to Boston,but in the police isn't accept,but he can work how to departed in the mafia.
Mafia in Boston is very importnat,it has got a big organization and it has got a other departed into police,this man is very important and he is a director to a big operation versus mafia.The story finish when Jack,the director of mafia dies,then Bill Knows the story of the police agent,he can send of the prision,but when he has got the police,a other police alsow he is a other departed and kills Bill,then the first departed kills another time the killer.
The final the police became a hero of Boston,but is a bad person.
I recomend this film,is very interesting.