Nash and Joe team up with a tough-talking NYPD Special Crimes Detective (Penny Marshall) in order to track down a famous fashion model's deadly stalker. Meanwhile, Harvey helps Evan track down his lost badge before Nash finds out. A shopping trip doesn't turn out the way Nick and Lynette had planned.

When Nash and Joe investigate the mysterious disappearance of several armored cars and their drivers, they uncover a high-tech, covert crime operation run by ex-Navy Seals. When the robbers kidnap Evan, Nash must lure them out of hiding by staging an armored car delivery. Meanwhile, an off-duty case finds Nash and Joe searching for a star football player's dream girl, whom he spotted in a stadium filled with 65,000 fans but doesn't know. Also, the relationship between Evan and Cassidy intensifies as they struggle to keep their affair a secret from Nash.

Nash discovers his life savings is gone when his accountant invests in a deal cooked up by ""Bombshell"" Tamara Van Zant. While trying to remodel the bathroom himself, Joe burns down his house and takes Nash up on his offer to move into Lisa's. Nick decides to take scuba lessons.

An innocent man is scheduled for an execution. Nash, working the entire case from the 'Cuda, must bring the true killer to justice before the midnight deadline. Lucia's bullying of a schoolmate forces Joe and Inger to attend conflict resolution therapy, which only leads to more conflict.

Nash and Caitlin go undercover as swingers to bust a male-female team who prey on wealthy swinging couples. Joe and Boz help Nick recover the corpse of an old friend to whom Nick made a war-time promise.

Nash pursues a deadly arsonist who torches a church and the only witness is Angel. Caitlin investigates Evan on a police brutality charge, probing into his past. Nash's friends and family plan a surprise birthday for him.

Nash and Joe have to babysit Mickey Tripp (Paul Gleason), a motormouth shockjock, after a body armor-wearing assassin tries to kill him. Their search for the assassin is compounded by the fact that Nick has hired them on an off-duty case to find his softball team's star pitcher - a Salvadoran defector named Chus (Jose Canseco), who's on the run from the INS (Karl Malone). Caitlin babysits her roommate's kids.

Nash protects a beautiful rock star who's blood is coveted by a group of modern-day vampires. Boz Bishop buys a new car for Joe at a police auction unaware that drugs are hidden in it. While dog-sitting for Harvey, Evan discovers the dog park is a babe magnet and uses King to score dates.

Nash and the SIU must re-open a serial killer's case file when a body is discovered and it appears to be Angel's. Bonnie, Harvey's ex-wife, returns with an interesting proposition. Joe and Caitlin square off as rival soccer coaches when their teams enter the playoffs.

An ex-cop is released from jail and seeks revenge on Caitlin who put him there. Nash teams up with Caitlin to capture him. Joe and Inger continue their efforts to become pregnant, discovering how difficult it is. Harvey and Evan go underground as wealthy conventioneers at a ritzy hotel bar to catch a follow-home robber.

Four robbers storm into a check-cashing outlet. They release tear gas grenades and rob the place. Nash, Joe, Harvey, and Evan respond to the silent alarm. Three robbers (who all turn out to be women) dump the cash into a getaway car (driven by another woman) and leave on foot. Harvey and Evan run into the getaway car, but let it go, not knowing that the robbers are women. Nash and Joe confront the fourth robber. Nash shoots him dead through the eye hole in his gas mask.

The dead robber is Adrian Beltran; stolen is 100,000 dollars. The MO (modus operandi) is similar to a North Beach robbery crew from four years ago, who are now all in prison. Nash suspects Anthony Warrick, who ratted out the original crew. But Warrick retains heavy-duty lawyer Denise, and Warrick is clean with no connection to the dead man. While Harvey and Evan surveil Warrick, another robbery goes off. A trace of the tear gas grenades leads to Bunker Bob, but he only identifies the dead Adrian Beltran.

A study of the

When a controversial Latina actress is shot and killed, suspicion turns first to her former lover, then to a crazed stalker. Evan comes back to work after surgery, but Cassidy wants nothing to do with him. Caitlin moves in with Nash, and causes strife between her and Nick.

Nash and company foil a failing restaurateur's kidnap plan to ransom his nanny's child. Nick has sex with Bridget, Caitlin's inept maid. Inger returns for a visit, but leaves for Sweden again. Cassidy has a friend attempt suicide because he can't get a date with her.

A small time getaway driver sets up two robbery gangs to rob each other, while he walks away with the loot and complete immunity. Evan is brought in for another chance in Joe's off-duty case concerning a kidnapped son who has had a gender change. The 'Cuda hood is graffitied, and Nash puts Boz Bishop on the case.

Nash goes undercover as a hitman for a drug cartel. Nick's poker buddies plan a bank heist; Inger returns from Sweden with her mother; Evan gets his engagement ring back from Cassidy.

A married woman is murdered by her lover and his wife. Evan is beaten up trying to free his girlfriend/hooker from the clutches of a pimp. Joe takes Evan in, but Evan attempts suicide. Boz Bishop asks for a promotion at the detective agency.

Wearing his brother's uniform as a motorcycle cop and impersonating a police officer, a deranged man imagines and talks to his dead brother. Nash adjusts to his break-up with Caitlin; Nick fails his driving test; Cassidy asks Evan for help to move back into a Berkeley apartment.

A gang of female prisoners escape in search of five million dollars in bearer bonds, while Nash helps the woman framed for the theft of the bonds. Joe has trouble with a delivery boy, while Cassidy considers a career with the CIA.

Nash and Joe get a tip from Tony B that there is a hit out on Chief of Police Frank Girard. But it's already too late, as the Chief's car is shot up - the Chief and his driver are killed. Nash and Joe arrive to find the carnage.

The Chief was a close friend of Nash's. There was one driver, one triggerman, using a bright red Impala. The Impala crashed into a taxi, leaving behind a paint sample.

Thanks to Caitlin's suggestion, the SIU and the Embarcadero station are sharing office space in the barge. There is total chaos, as Joe is forced to share a desk with Jake Cage. Tony B is interrogated. Tony B has a new business - Bay Area Switches. The trucking business is really a front to ship money to Las Vegas to be laundered. Tony B's contact is Ellen Holiday. Holiday is in contact with the assassin of the Chief and with Jimmy Z, head of the money-laundering operation.

Holiday is arrested and questioned, but she reveals nothing. The red Impala is found, tracked to a Melvin from a wrecking ya

An old nemisis of Nash's breaks out of prison. Joe finds a new house through Ulla, makes an incredible deal on it, but it turns out to be a disaster. Harvey's new partner, Antwon Babcock, joins the SIU.

Nash and Joe are on the trail of a high profile robbery ring that targets San Francisco socialites. Nash runs into Angel when Belinda Cruz hires B&D to prove her sister's pregnancy (she's a nun) is not a virgin birth. Joe enlists Nick to build a speed bump in front of is house.

Nash tries to stop a deadly game in which participants shoot and kill each other until only one is left alive; a wealthy family's gardener is murdered and Nash starts to fall for a beautiful new investigator working the case.

Nash must resurrect Tony B., who fakes his own death to escape a mob boss, only to discover that Tony's ripped the guy off and has good reason to want to be dead.

Rachel is accused of murdering a man who was helping the police investigate corruption in an accounting firm, but Nash is convinced she was framed; Joe tries to find a ringer to represent the department in an arm-wrestling contest.

Nash hunts for a vigilante who claims he's helping solve crimes by murdering deadly criminals, including a serial rapist; Nash's distant and eccentric cousin, who is also a cop, visits from Scotland.

Nash goes up against a gang of ruthless techno-geeks who are designing robots to perform robberies. Joe mistakenly sells a painting containing the Declaration of Independence at this yard sale and realizes he must do anything to get it back.

Cassidy is suspended following her involvement in the fatal shooting of a bystander during a bank robbery and becomes the target of department cronies who want to use her to get rid of Nash.

A serial killer who picks up passengers in a cab and then murders them stalks the city; Cassidy struggles with whether she wants to continue to be a cop.