Just picked up this movie and all I can say is WOW!
A spy in the police force. A spy in the mob. When the two cross paths they race against each other to reveal the other's identity.
Not necessarily a new concept but a clever one that's directed with great craft and great actors.
Apparently Brad Pitt and company have picked up the rights to produce a North American version-as a lot of Holywood studios are looking towards Asian Cinema for ideas and remakes ie- The Ring,