Special Agent Katz of the FBI relies on Nash and Joe to retrieve a Suburban packed with stolen agency weaponry. Meanwhile, Joe orchestrates a blind date for Nash with his former nanny.

Willie Nelson portrays Earl Dobbs, a prisoner granted temporary release from San Quentin. His task: assist Nash and Joe in tracking down a former accomplice.

Nash and Joe’s investigation leads them to a former underboss of the mob, now responsible for a string of murders targeting San Francisco’s criminal element. Simultaneously, Inger must travel, requiring Nash and Joe to care for the infant.

Nash and Joe pursue the erratic path of a patient suffering from severe mental illness, a man convinced he is the arch-enemy of Sherlock Holmes. Meanwhile, Joe finds himself increasingly managed by a young nurse tasked with caring for an in…

On the cusp of a resolution, Nash finds himself narrowly escaping death in an explosion, the event leaving him with a week's worth of lost memories. With Joe’s assistance, he must now retrace his steps, solve the case, and navigate the pers…

Cassidy’s life takes a sharp turn when she becomes the target of a daring jewel thief who scales buildings with alarming ease, drawing her directly into an SIU investigation. Meanwhile, Nash narrows in on a prime suspect: Cassidy's new boyf…

On Halloween night, a sniper’s presence casts a pall of terror over San Francisco, while a city-wide outbreak of the Blue Flu compels the SIU detectives to take on the duties of patrol officers. Meanwhile, Joe embarks on a quest to locate a…

The murder of a reporter, caught while investigating the burgeoning "French Connection," forces Nash to confront a disquieting possibility. His brother, presumed dead for twenty-four years after being lost in Vietnam, might be alive, and li…

Mistakenly freed from prison, a fugitive sets out to exact vengeance on Michelle. Determined to stop him, Nash joins forces with her to bring him to justice. Separately, Nash declines a request from Joe to assist with an off-duty case invol…

Tamara VanZant, the alluring and notorious criminal and former flame of Nash, has re-emerged, this time entangled in a scheme to peddle stolen plutonium. Meanwhile, Joe envisions striking it rich with a secret salsa, a recipe passed down th…

Rick Bettina reprises his role as head of the S.I.U. Joe faces accusations of misappropriating three million dollars from a person of interest. Meanwhile, Harvey becomes entangled in a passionate affair with a woman he previously apprehende…

The actions of British consulate employees threaten to ignite an international crisis when they orchestrate a false death for a convicted criminal, intending to manipulate him for their own secretive aims. Meanwhile, Joe is driven to desper…

The announcement of a million-dollar reward for Nash’s capture unleashed a relentless barrage of assaults from a cadre of formidable combatants. While surveilling a suspect in an internet harassment case, Michelle encounters a man who seems…

Geraldo Rivera arrives at the SIU to interview Nash and Joe. Nash has recently arrived at the station after a biker couple slipped something into his drink – something that altered his perception. A source within the SIU, a confidential inf…

Bettina insisted Nash take leave.

Nash and Joe find themselves collaborating with Penny Marshall, a hardened NYPD Special Crimes Detective, in pursuit of a dangerous stalker targeting a celebrated fashion model. Separately, Harvey endeavors to assist Evan in recovering his …

Nash finds himself entangled with Irish terrorists, a dangerous new path intersecting with the familiar presence of his ex-wife, Kelly (Serena Scott Thomas). Elsewhere, Joe is tasked with the care of a vivacious Arabian prince, one awaiting…

Detective Nash and his partner, Joe, find themselves immersed in a series of savage murders linked to the city’s drug trade. Their investigation leads them down a labyrinthine path of evidence, ultimately pointing to an unexpected figure: B…

Bettina stands accused of murdering a woman who worked as a high-class courtesan. Rick’s only hope lies with Nash to uncover the truth behind the frame-up. Simultaneously, a man posing as Joe has captivated the town with his charm—all funde…

Nash and Joe are pursuing a ruthless gang whose threat hangs over downtown San Francisco: release the lethal nerve gas, or the city must be evacuated. Their plan is chillingly simple: once the streets are empty, they will move in and rob th…

Nash finds himself bound to protect Lynette (Suki Kaiser) when she unwittingly becomes entangled in a dangerous Asian forgery operation. The situation escalates when Lynette’s former lover, Brian, sends her a perfect replica of a $100 bill,…

The vanishing of armored vehicles and their crews draws Nash and Joe into a shadowy world of sophisticated crime, revealing a clandestine operation orchestrated by former Navy Seals. When Evan is taken captive, Nash must devise a plan to dr…

Nash’s pursuit of the couple responsible for the escalating crimes leads him into a shadowy world of heavy metal and arcane devotion. As the pair’s actions grow increasingly violent, he must desperately race against time to prevent them fro…