Heroic Duo
雙雄 (original)
Tough cop Ken Li (Cheng) is at the top of his game, but he's going to need some help to solve a grisly crime that the offender, a respected police officer, doesn't even remember committing. He seeks out Jack Lai (Lai), a former psychologist now in disgrace and behind bars, who has an uncanny ability to bend people to his will. Making an uneasy truce, this unconventional pair set out on a mission to find the man responsible, a master of hypnotism who will stop at nothing to get his revenge!
Starring Leon Lai, Ekin Cheng, Francis Ng, Karena Lam, Raymond Wong Ho-Yin, Anson Leung, Samuel Pang, Rico Kwok, Kam Hing-Yin, Xu Jinglei
Watch "Heroic Duo" on Kanopy released in 2003. It's a crime and thriller movie, and has a rating of 5.8 out of 10 from Imdb which is fairly okay for this kind of movie.