In the Blood (Chinese: 神探父子兵) is a 1988 Hong Kong action film directed by Corey Yuen and starring Andy Lau and Bill Tung.

Criminal Investigation Department (CID) inspector Wah and his father, Commissioner Louis are outstanding police officers who share a close relationship.

On the other hand, father and son beat cops, Uncle Ma and Dan always bicker, and end up pulling their pistol at each other while giving a parking ticket.

One night, Dan sees Sze in the streets and manages to find Fei-ying at a pier but was captured by the latter and his henchmen.

In the hospital, Dan confesses he feels like a useless son and wants to achieve success in order for his father to retire with pride and pleads Wah to reinstate the position.

Fei-ying calls Sze asking for the cocaine back and she tells him to meet at Wo Hop Shek Public Cemetery the next day at 12 PM.