When the chief investigator of a controversial report documenting corruption within the NYPD is gunned down the day before his findings are published, Mac and Stella must find the killer, launching a massive search that makes every officer listed in the report a suspect. Meanwhile, Danny and Aiden investigate the murder of a gypsy cab driver.
Elenco: Carmine Giovinazzo , Anna Belknap , Robert Joy , A.J. Buckley , Hill Harper , Eddie Cahill , Gary Sinise , Sela Ward , Emmanuelle Vaugier , Hill Harper , Robert Joy , Sela Ward , Vanessa Ferlito .