Dunbar and Bettancourt investigate the murder of a boxing promoter; Russo ridicules Dunbar for his determination to carry a gun even though his recent use of the weapon endangered others.
Dunbar's gun is stolen and he suspects it may have been used in a murder; a high school boy with connections to drug dealers is shot and killed.
Dunbar and Bettancourt investigate when an old woman is found dead in an apartment fire determined to be arson.
Dunbar poses as a drug dealer while trying to solve a murder, but thugs beat him up and steal his guide dog.
Dunbar and Bettancourt investigate a shooting in which the victim's identity cannot be confirmed; Bettancourt will not forgive Dunbar for chasing off her boyfriend without first telling her of his criminal past.
Dunbar and Bettancourt make a mother give her child to the father after a bitter custody dispute; Dunbar tells Bettancourt's new boyfriend to leave or have his arrest record revealed to her.
A man falls to his death from a 12th floor window, and Dunbar suspects murder when he learns that the victim was sexually molested as a child.
Dunbar tries to redeem himself after he lets a man who murdered a Korean grocer escape.
When someone rapes two women and carves the letter 'Z' on their faces, Dunbar suspects a prison inmate.
Dunbar's former partner, Terry, the one responsible for Dunbar losing his sight, is shot with the same gun that killed two gang members.
When Detective Carl Desmond is found murdered, the squad thinks the killer is someone Desmond has arrested, but Dunbar believes the culprit is Desmond's former partner.
A pedophile is the chief suspect when a 12-year-old boy is found murdered; Dunbar's wife threatens to leave him after he flies into a jealous rage at a dinner party.
Dunbar discovers that the stolen-car case he is working on may be connected to a string of murders.