Da Vinci investigates a body in the sewers; Brian accompanies Rose on a homicide case; Kosmo is troubled by a witness... Full summary

The media learns of the mayor's involvement in a hit-and-run; Leary uncovers a possible Russian connection in the... Full summary

Internal Affairs secretly interrogates Sue; Da Vinci needs the mayor and police chief's support for his red light... Full summary

Da Vinci learns he is the target of a private investigation; Brian implicates Sue in the murder of an informant.

Da Vinci remains at odds with the mayor and police chief; Leary and Kosmo learn that a murdered drug runner was under... Full summary

Da Vinci suspects a high-reaching conspiracy is protecting the mayor; a murdered drug-runner turns out to be a friend... Full summary

Da Vinci is frustrated with the mayor and the new police chief; Shannon and Rose work on the case of a baby found in a... Full summary

Da Vinci investigates the death of a Chinese freighter crew member; Kosmo and Leary look into the police beating of a... Full summary

Da Vinci uncovers further news about the mayor; Kosmo and Leary find a witness in the police beating of a young drug... Full summary

Da Vinci looks into the hit-and-run involving the mayor; Leary investigates the suspicious death of a drug dealer.