Aka：Infernal Affairs / Szigorúan piszkos ügyek / 无间道 / Двойная рокировка / Infernal Affairs: Piekielna Gra / Infernal Affairs - Infiltrados / Volavka / Juego sucio (Infernal Affairs) / Kirli İşler / 무간도 / インファナル・アフェア / Ο Άνθρωπος του Νόμου / דרך ללא מוצא / Conflitos Internos / امور داخلی / Vô Gian Đạo / Пъклени дела / Afacerile infernale / 無間道 / Подвійна рокіровка / สองคนสองคม / Asuntos infernales / Dviguba rokiruotė
Summary：Chen Wing Yan, a policeman, successfully infiltrates a gang while Lau Kin Ming, a tried member, becomes a mole in the police force. However, things change when both of them must seek each other out.
