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Newly employed as an FBI Special Agent, Cullen finds that the job is not what he expected, while Officers Tolbeck and Reinhardt's bond grows at the SDPD. Dirk and Sue begin their new adventure as a newly married couple.

The SDPD brings in a PR representative (D'Arcy Carden) to address Tolbeck's accident and Dirk and Sue settle in at The Collective. Cullen and his new partner Risoli (Jillian Bell) begin to monitor a former cult member.

Cullen and Risoli's interrogation of the former Collective member reveals some startling new information. Meanwhile, Dirk meets his adoptive daughter, Madison.

After Magnolia fails to infiltrate The Collective, Cullen and Risoli are invited to meet with its leader, Terry, and Sue returns from her meeting a changed woman.

Det. Cooper fills in the blanks of last night's events to a woozy Cullen while Dirk finally meets Terry. Janice and Fatima return to dispatch.

Dirk takes matters of his marriage into his own hands after teaming up with the FBI and Dustin, who in turn is frustrated with Cullen's lack of enthusiasm and commitment to his documentary based on The Collective.

In this documentary from Jürgen Leibbrandt, the FBI investigates supposed cult The Collective and seeks the truth behind who really shot Agent Risoli.

After reuniting, Cullen and Tolbeck realize they have information that could take down The Collective.

While staking out the red-light district of San Diego, the recently demoted Cullen and Tolbeck spot some suspicious activity.

Cullen is tasked with helping Officer Charles Brock extradite a key witness in the Las Hormigas Cartel investigation but all hell breaks loose at 30,000 feet.

Cullen tries to set boundaries as a worse-for-wear Brock comes to terms with his new reality. Meanwhile, Janice’s frustration with the invasion of BopBot intensifies and Chief and Gary need to rectify a huge mistake.

As Cullen and Tolbeck prepare to give Doris’ family the news that she is finito, they get a surprise visit from FBI agent Dustin Kasprowicz.

Leon throws himself a retirement party but Cullen and Tolbeck are wary of his intentions. Clint confronts Janice about her hatred for the BopBot, but the conversation quickly turns into a rehash of their romantic past.

Disgraced and behind bars, former detective Josh Haldeman is interrogated by Agent Kasprowicz. Back at Dispatch, Clint and the BopBots have successfully infiltrated the department and everyone's job may be on the line. On a stakeout, Cullen is stuck with a less than enthused new partner.

Cullen is partnered with his girlfriend, Lieutenant Sophie Beyers , but as they exchange gifts to celebrate their 3 months minus 9 days anniversary, their close proximity may prove to be too much. Gary is on the run and needs to figure out what to do with Yaya. Fatima finds her voice and stands up to Janice.

After losing yet another key witness in the Las Hormigas Cartel investigation, Cullen is forced to deal with the consequences... and FBI agent Dustin Kasprowicz. Janice returns to Dispatch to confront Clint and delivers shocking news.

Car 27 stakes out a cockfighting ring. Cullen and Tolbeck are rattled when a hero of the San Diego Police Department falls from grace. Both Marco and his new partner-in-crime, Frankie, have a secret. Fatima falls victim to extortion.

Marco puts the entire cockfighting ring in jeopardy and must find a solution before it's too late. Fatima is forced to undergo sensitivity training. A dream scenario for Cullen and Tolbeck turns nightmarish.

The night of the cockfight arrives with unexpected results. Janice (Amy Sedaris) blames Fatima for her financial woes. Tolbeck has an unlikely admirer.

When Cullen and Tolbeck are reunited with a figure from their past, Cullen realizes that he doesn't know his partner at all. Meanwhile, Marco and Frankie open up to each other, and Janice finally unravels.

Zach, the new dispatcher at SDPD, goes to various lengths to impress Fatima. Cullen confronts Tolbeck, who admits a shameful secret.

Cullen and Tolbeck make a shocking discovery. Fatima is jealous of Zach's newfound success. Marco comes clean and his situation with Frankie comes to a head.

Marco and Frankie are victims in the nicest hostage situation ever. Fatima inserts herself in the middle of an awkward love triangle. An annoying visitor joins Cullen and Tolbeck in Car 27.

Cullen and Tolbeck are finally given the chance to save the day. Marco and Frankie consider their options, while a new - but not necessarily improved - Janice returns to Dispatch.

On Night 35 of a drug stakeout at the San Diego docks, Detectives Cullen and Tolbeck find themselves waiting on a Mexican cartel drug shipment.

Following the shooting, Detective Tolbeck waits nervously for Internal Affairs Investigator Leon Fordham to arrive.

With the docks now compromised, Detectives Cullen and Tolbeck are re-assigned to warehouse surveillance in the Otay Mesa area.

Detective Cullen and Fatima recall their first date with vastly different versions of events.

While Detective Tolbeck is seeing a therapist to discuss the shooting at the docks, Cullen is partnered with Senior Detective Bonnie Lyman.

Detective Cullen decides that it might be best to finally part ways with Tolbeck. A surprise visitor disturbs car 27.

Detective Tolbeck is forced to confront the problems in his marriage as the pending raid draws near.

It's the night of the raid and Detectives Cullen and Tolbeck are intent on being the hero cops who break the drug ring.