The homicide detectives have to cope with some huge changes in their life. The squad room has been renovated and painted blue, Munch is dating Billie Lou, and Pembleton has resigned. Meanwhile a grisly murder arises, connected to Giardello.
After being shot at, a wealthy doctor shoots an intruder in his garage. Homicide determines the body is his sister-in-law. Two sets of fingerprints are found on her gun; the money trail (gambling debts, forgeries, insurance) leads to an unlikely conspiracy.
A popular author of thrillers is missing; his wife has a video in which he warns that his agent may kill him. Discovering that he had a mistress and finding his car at the airport, she is ignored UNTIL the mistress reports him missing as well. No body, no weapon... can the two probable killers be charged?
Bounty Hunter Dennis Knoll tracks down fugitive Joe Errico in Florida, meanwhile Bounty Hunter Jerry Lichte nursing a broken arm in a car accident in a Baltimore Homicide detective car and a random driver, is relegated to a desk job at Patriot bail bonds. Bounty Hunter P.J. Johnson is excused by the Baltimore Police in the Shooting death he was accused of.
Investigation continues on the case of the newborn baby found buried behind a motel. The teen mother's parents employ a P.I. to frighten her into accusing her boyfriend. Police and prosecutors proceed to the Grand Jury, hoping to pressure one of the young parents to make a deal by letting them experience jail time. It works!
Even though the young mother of the suffocated newborn has made a deal to testify, her boyfriend is convinced she will not wrongfully accuse him--because of their love. Falcone tries to talk sense to him, but he remains convinced she will not betray him. He is shocked at the turn of events in court.
A white bus driver is beaten to death after he drives into a West Indian woman. In a nearby alley, a young black man is also found beaten to death. Racial tensions divide the Homicide squad as well as the city of Baltimore, but the true causes are not what they seem.
A skeleton of a young woman is discovered, leading to the solution of a long-forgotten bank robbery. Finding her killer is more difficult when one suspect is dead and the other two accuse each other. Meanwhile, Gee lays down the law about detectives on the same shift being romantically involved. Which is more important, relations with police partners or a lover?
A murderous webmaster announces on a website run by a homicide detective that he will kill women live and on-line at specified times and taunts the Baltimore police force to try and stop him from perpetrating the crimes.