Mad Detective (2008)

Chan Kwai Bun (Lau Ching Wan) has the power to see people's "inner personalities," making him a very capable, if unorthodox and unstable, police detective. He is invited back to active duty by Ho Ka On (Andy On), a cop investigating the disappearance of a fellow officer whose weapon has been used in multiple robberies. Ho and Ko Chi Wai (Lam Ka Tung), the missing cop's partner, go after an Indian suspect. Bun, however, can see both men's inner selves and suspects something else at play.