The Criminal Investigator is a 1995 Hong Kong police procedural television drama. Produced by Jonathan Chik and edited by Chow Yuk-ming, the drama is a TVB production. The story follows a team of investigators from the Organized Crime and Triad Bureau unit of the Royal Hong Kong Police Force.

A Hong Kong homicide detective insists on the same name that his father, Rock Moon, has died and carved it deeply into his heart. In this case her mother is treated in a psychiatric hospital. Have found that their heads are the same in recent drug trafficking and crime-ridden campaigns.