"God wants him to perish, so he first drives him mad." This ancient proverb, referencing the madness of an idealist besieged by a corrupt world, lies at the thematic heart of the original Infernal Affairs . Yet, it serves as an even more fitting epigraph for its conclusion: Infernal Affairs III (2003). This final installment, a cinematic puzzle box that is both a sequel and a prequel, eschews the taut cat-and-mouse game of the first film for something far more ambitious and unsettling. It plunges its surviving protagonist not into the physical world of shootouts and wiretaps, but into the deepest, darkest depths of a fractured psyche, making it a daring and essential, albeit flawed, masterpiece.

(Leon Lai). Yeung is cold, efficient, and carries a cryptic connection to the late Chan Wing-Yan. Convinced that Yeung is another mole for the triads, Lau begins a high-stakes game of surveillance and psychological warfare to expose him before his own past catches up. Parallel Lives