When the body of a young hooker is found in the district, Dutch's theory about a serial killer preying on prostitutes proves true. Aceveda launches an all-out effort to find the killer before he strikes again, giving Dutch and Claudette the full resources of the Barn for 24 hours and the help of the FBI.

Vic and the Strike Team mediate a dispute between Rondell Robinson and the Nation of Islam, while Dutch and Claudette investigate a brutal home invasion in the district's Korean community.