Terry begins his undercover assignment. Kevin Patrick has trouble coming to terms with his disabling injury and Jonas takes up his new post.

A badly wounded woman leads the precincts street cops to a house with six dead bodies, all tied up with their throats cut. The investigation starts to find those who committed this crime.

The ex-wife of McKenzie, the prosecutor who helped Jack, is found dead in her apartment. 'Woody' is the main suspect and the detectives investigating think he may have hired a killer. Looking for help he calls Donovan to help him.

Terry gets deeper into his undercover role and Jimmy finds out that the Irish gang involved is setting up a deal to buy automatic weapons.

Terry's undercover work is beginning to worry Jimmy. Joe has it in for Terry, because Jimmy arrested him when he was younger. The bank job is going down soon and Joe could be planning to set Terry up.

Kevin Patrick comes back to work, trying to adjust to the fact that he is going to spend the rest of his life in a wheelchair.