At the police funeral of three dead officers, Nash and Joe are on the look out for a fourth confederate who Nash believes got away. Before the funeral ends, Nash and Joe are arrested for the murders of the three officers by Lieutenant Darren Isley of the Management Control Division (MCD).
Things get worse in jail when Nash and Joe discover that Rick Bettina is to be their advocate before the Police Commission Hearing. Nash and Joe are charged with the murders of Inspectors Pembrook, Bennett and Larson. They are held without bail pending a probable cause hearing whether to proceed to trial or to a dismissal of charges. Inspector Caitlin Cross is chosen by Bettina to be their investigator. Caitlin immediately clashes with Nash on how to proceed - Nash firmly believes a fourth man is involved, but nothing can be found of a fourth confederate.
Bettina has had a romantic relationship with the Police Commissioner Debra Woods, who presides over the hearing along with four other commissioners. Joe testifies first, revealing that Nash has been promoted to captain. Nash will still command the SIU in addition to the Narcotics Recovery Unit (NRU). The NRU is headed by Pembrook, but Pembrook wants to head the SIU. Joe reveals that Nash and Pembrook have both dated Rebecca Taylor; she was beaten by Pembrook, and Nash has warned Pembrook off. Under cross examination by lawyer Avery, Joe is forced to admit that Nash threatened Pembrook.
Harvey testifies next. Harvey reveals that a drug mule, Enrique Piedra, caught with 30 balloons of cocaine in his stomach, had information that Pembrook was skimming drugs and money off all of the dealers. Nash then took the investigation up to Management Control Division, headed by Lieutenant Darren Isley. Under intense cross examination, Harvey gets Bettina to interject. Bettina calls in what he believes is his inside favor with Commissioner Woods, but instead she finds Bettina in contempt of court and throws him in jail. Now in jail with Nash and Joe, Bettina sleeps in the nude, and wakes up Nash and Joe with his vocal exotic morning exercises.
Rick apologizes to Commissioner Woods, and Nash testifies next. Nash reveals that he was contacted by Bennett, who wanted to turn his NRU comrades in. Bennett informed Nash that after a bust, the NRU was going to split up the loot at the Bosnia Projects. On the way, Nash and Joe spot Hubey, a street thug trying to hide a rocket launcher in a duffel bag. Unable to let this go, Nash confiscates the rocket launcher and handcuffs Hubey to a railing. The rocket launcher comes in handy when Nash and Joe are cornered in an ambush set up by Bennett. Nash sees the fourth man run away as Nash blows up 2 cops as Joe shoots another.
Lieutenant Isley testifies next. Isley reveals that the MCD was conducting an investigation of Captain Bridges because they believe that Nash was using the allegations against Pembrook as a cover for his own illegal activities. Nash realizes that Isley is lying, and that Isley is the fourth man.
With a break in the testimony, Nash sends Evan and Caitlin to check Isley's airtight alibi that Isley was in Sacramento conducting internal affairs seminars during the ambush. Caitlin discovers a break in the schedule when Isley could have gotten away to be at the ambush. While Rick stalls in court, Evan and Caitlin return from Sacramento with hard evidence. Isley's two wives are brought into court - he is a bigamist. Caitlin discover two pounds of heroin and $100,000 in cash hidden in his Sacramento home. The charges against Nash and Joe are dismissed; Isley is arrested. On the way out of court, Caitlin warns Nash that she's looking to prosecute him.
For more, see commentary for Episode 59