The Criminal Investigator (Traditional Chinese: Oè¨Â實éÂÂ; ) is a 1995 Hong Kong police procedural television drama. Produced by Jonathan Chik with a screenplay co-written 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 (OCTB) unit of the Royal Hong Kong Police Force.