Infernal Affairs (Blu-ray Disc)

Chan Wing Yan (Tony Leung), a hard-nosed cop, is sent undercover to infiltrate the notorious Triad crime ring. An expert at bringing down crime syndicates, Chan believes this next mission to be routine. What he’s not prepared for is the discovery that the Traid gang has a mole within his own police department – who is hunting Chan. What ensues is a battle of wills and only one cop can win.