The SIU try and track down a serial killer who uses a cab to pick up passengers, then murders them. Feeling guilty, Rachel reveals herself as the mole, and tries to help Nash take down Lt. Urbanski. Cassidy struggles with whether she wants to continue to be a cop.
The SIU try and locate two women who commit robberies. Betty Ann finds some discrepancies in the paperwork, leading Nash to believe there is a mole in the SIU. Boz and Antwon work a case for Joe, trying to find who stole a master copy of a tape from a record producer. Joe gets offered $350,000 for Mr. Woody, but decides to stall, hoping to get more. Rachel celebrates her birthday.moreless
While trying to stop a bank robbery, Cassidy accidentally kills a bystander, which leads to a suspension and investigation. Nash tries to track down the people behind the robbery while Cassidy contemplates her future as a cop. Joe hires Betty Anne as an assistant, which drives Nash nuts. Antwon's sister comes to town and tries to get him to reunite with his ailing father. Rachel is forced to go to a wedding for her ex, and winds up drunk and sleeping over at Nash's.moreless
The SIU try and track down a man who has been stalking women all with the same name, and has murdered one of them. Harvey finds himself attached to one of the potential women, as she is a fellow Deadhead, however, he soon discovers she has many secrets. Joe becomes a leiuteniant but realizes it comes with a ton of paperwork. Nick injures his leg and annoys Nash and Cassidy to no end, so Nash hires a woman, who turns out to be eccentric, to take care of him.moreless
Nick thinks he sees his long lost son, Bobby, but the person is just a teenager. Nash suspects that the child, who is mixed up in a drug ring, may be Bobby's son. While all this is going on, he deals with being sick, which causes strange hallucinations. Cassidy starts dating a plastic surgeon and contemplates have breast augmentation. Harvey accidentally releases a squirrel in the SIU and he, along with Antwon, try and catch it.moreless
After a robot robs a store and kills the clerk, Nash must track the elusive people behind it before their next gig. After Inger sells a painting that is said to have an original Declaration of Independence hidden behind it, Joe must jump through hoops to get it back. Nick is convinced that he will die on his birthday, which is fast approaching.moreless
The SIU try and track down a vigilante, who is taking out the members of a gang one by one. Nash's distant cousin, who is a cop, visits from Scotland, hot on the trail of an art thief. Nash has a difficult time believing he is a top ranked cop, as he appears to be clumsy, and has strange detective methods. Harvey hooks up with his neighbor, but her dog seems to get on his last nerve.moreless
Nash and his friend, who is a federal marshall, are taken hostage by a Miami drug lord who wants to exchange them for a witness who's scheduled to testify against him in court. As usual things aren't as they originally appear when the SIU learns that the witness may have secrets of her own. Joe gets audited, and winds up in the middle of a lover's quarrel between Pepe, who is his accountant, and the auditor.moreless
Tamara Van Zant is back in town, and loaded, after her very rich husband passes away. In order to protect herself from whomever is after her, she fakes a marriage to Nash. Nick agrees to pretend to be the boyfriend of his lesbian friend, so she can make her son think she is straight. Unbeknownst to him, her son is a high profile gangster, who is involved with Tamara.moreless
Rachel is arrested for murder, and the SIU try and track down the real killer. Things get sticky when Nash catches her in lies. Joe tries to find a ringer to represent the department in an arm-wrestling contest.
A pair of lawyers are ambushed leaving one riddled with bullets and the survivor barely wounded. The survivor easily points out the killer, a teen with a record, but Nash has his reservations about the case. Joe discovers that the previous owner of the house had a tenant, who has a legal right to live in the house. Rachel meets a man online, but can't make the date she set up, sending Cassidy instead. Both Cassidy and Rachel are under the presumption that the man is into them.moreless
The SIU work with a Canadian Mountie to try and track down a ring of poachers who are illegally selling bear gallbladders, which are supposedly valuable as medicine and as an aphrodisiac. Rachel is asked to do a report on Cassidy. Rumours start spreading about Nash and Rachel's relationship, which is not helped when she fears she may be pregnant. Nick gets into a physical altercation with a fellow fisherman over a fishing spot.moreless
Tony B. fakes his death after he rips off a mob boss with ties to Nash's past. Nash uses this as an opportunity to put the mobster away for good. Joe catches Ulla smoking pot. Nick gets arrested for protesting against the demolition of a building, but cannot remember why the building is so important to him.moreless
A man kills an elevator full of people, leaving just one woman alive; a reporter who only cares about the headlines. While giving a test drive to a potential buyer, Joe's car gets stolen. He lies to Inger about what happened and when she finds it parked outside of a hotel, she assumes he is cheating. Harvey accidentally gets sent nude pictures of a woman, and he is determined to find her and ask her out.moreless
When Rick Bettina escapes custody during his parole hearing, Nash must track him down before he can recover the $2.5 million dollars in pension money he stole. Joe tries to help Dov and Amy work out their relationship, before his house's renovation suffers.
The SIU try to track down a group of people who are killing in each as part of a survival type game. Boz becomes the prime suspect in a murder case when a body is found in his trunk.
Nash and Joe discover that someone is using their detective agency's name to stir up business for themselves, and that one of the impostor's clients is out to kill Nash. Cassidy and Rachel work a case of a college student who was murdered during a frat party. Harvey finds himself in the middle of a dispute between his neighbours, over whether or not their street should have a farmer's market.moreless
Two ex-military men steal evidence from a D.E.A. warehouse, and the SIU try and track them down. Harvey's suspicion of Antwon grows, and things get more complex when Antwon has a seizure when he is about to apprehend a suspect. Nick runs into an old friend and wants a date. He winds up having to set Nash up with her daughter, who has a secret. Joe has some issues with his home renovation.moreless
The SIU try to track a group of high profile car jackers who target San Francisco socialites. Nash and Joe take an off duty case, where a nun is pregnant and claims it is divine intervention. Angel shows up, and Nash tries to use him to help solve the case, and realizes that he has a positive affect on his father. Joe tries to stop a speed demon who constantly goes down his street. Cassidy becomes curious about Antwon's past.moreless
The SIU try to track down a briefcase with a lap top in it, which contains classified weapons intelligence. One of the key persons in the case is Tamara Van Zandt, who agrees to help them. Joe takes a private detective case to discover if a symphony conductor is having an affair. Cassidy struggles to let go of Evan's memory when she is asked out on a date.moreless
Cassidy gets assigned to a dangerous undercover gig involving synthetic diamond smugglers and a deadly assassin working for the South African diamond cartel. She, and her partner Rachel McCabe, team up with the SIU to solve the case. Joe and Inger try and fix their housing dilemma, but the sweet old lady who sold them the house, shows her true self. Joe also works an off duty case where someone has stolen very expensive wine from a winery, and is asking for a million dollars in ransom.moreless
The SIU tries to catch a man with ties to Nash's past, after he says he will set a bomb off unless Nash kills Joe. Cassidy, who is now a cop, is brought in to help, and so Nash can keep an eye on her. A new inspector, Antwon Babcock, is brought in to replace Evan. Joe and Inger are forced to move, and find a great house being sold for half its worth. Nick's memory continues to worsen.moreless