Bayliss, Gharty, and Ballard return to duty to find a completely remodeled squadroom and a new detective in the unit: Rene Sheppard, fresh from the fugitive squad. Everyone is called in to work a trio of savage murders in Little Italy, with one of the victims being Gee's cousin Mario. Gee's estranged son Mike, an FBI agent stationed in Phoenix, arrives in town and helps close the case, whose roots stretch back to Mario's choice to testify against a union boss 25 years earlier. Bayliss exhibits a new, Buddhist-influenced philosophical attitude toward his work, and hints of relationships among the detectives begin to surface - including one between Munch and Billie Lou.