ICAC Investigators 2004 is the 2004 installment of the ICAC Investigator series, produced by Hong Kong Independent Commission Against Corruption (ICAC) and TVB. It is broadcast on TVB Jade channel. Each criminal case is based on actual cases investigated by the ICAC.

Wayne Lai Yiu-cheung is a Hong Kong actor. He became one of Hong Kong's most successful television actors after starring in TVB hit drama series Rosy Business. Lai won three TVB Anniversary Awards for Best Actor, making him only one of three actors who have three wins in that category.