Line Walker (2014)

Chief Inspector Cheuk Hoi from Hong Kong’s Criminal Intelligence Bureau finds himself entangled in a web of intrigue following the suspicious death of a close colleague. As he investigates, Hoi uncovers a startling mystery: five undercover agents who maintained regular communication with the deceased have all mysteriously disappeared. Determined to uncover the truth, he navigates a dangerous landscape filled with deception and hidden agendas, questioning whom he can truly trust as he seeks answers in a city rife with secrets.