A police officer collapses and dies after pulling over a car, and the investigation reveals he was murdered. Horatio grows suspicious when Internal Affairs gets involved in the case, leading him to believe that the killing wasn't a random crime. Meanwhile, Calleigh aids an abused woman who is living with one of the suspects in the probe. Yelina begins dating Horatio's nemesis – who is heading up the Internal Affairs inquiry.
Elenco: David Caruso , Emily Procter , Adam Rodriguez , Boti Bliss , Eddie Cibrian , Eva La Rue , Jonathan Togo , Khandi Alexander , Kim Delaney , Megalyn Echikunwoke , Omar Miller , Rex Linn , Rory Cochrane , Sofia Milos .