The investigation picks up when police find a fingerprint amongst Gabbai's belongings which links to the crime scene of the double murder.

Following the attack on Kimberley, the noose tightens around the criminal activities of Karen's girl gang. But as the police close in, they strike again.

Samy tries to allay the suspicions of the Larbi brothers as the operation reaches its conclusion while Karlsson continues to walk a fine line. Last in the series.

The police investigation into the double murder has uncovered a link between Sandrine Jaulin and Zacharie Gabbai's criminal gang.

The net draws in around Riffaut and his gang, but in-fighting within the police means that very dangerous loose ends remain on the streets of Paris.

The police finally close in on Niko's prostitution ring, but the killer evades custody leaving Laure in a race to get to him first. Judge Roban discovers that the moral high ground comes at a price, while Pierre finds Josephine has made a deal with Szabo to save him.

While pursuing the raiders, police come across new evidence which could potentially shift the focus of the double murder investigation.

Gilou is taken into custody, as his team looks on in dismay. Joséphine defends Tarek Ziani and engages in a power struggle with Roban.

Police strive to pinpoint the connection between the elusive leader of Niko's prostitution ring and the killer. Tension mounts between Laure and Gilou as he prepares to the leave the team and Judge Roban uncovers proof of Arnaud's betrayal and his reaction is unforgiving.

The operation to capture Zacharie Gabbai has failed and he is now on the run. Carole Mendy requests Roban's help in a case of violent abuse.

Former public prosecutor Pierre Clement finds himself on the wrong side of the law and turns for help to the most unscrupulous lawyer he knows. Police tighten their surveillance on Niko's prostitution ring as the killer prepares to strike again, while Judge Roban discovers hard evidence to support his inquiry into municipal corruption.

The double murder investigation steers Laure's team towards a group of bank raiders.

Herville strives to endear himself to the police commissioner. Laure's team hires an informant who was already on the payroll of Bremont's crime unit.

Four weeks after giving premature birth to Romy, still in an incubator at the hospital, Laure Berthaud is eager to resume service. The 2nd DPJ is called in the twentieth arrondissement where a human torso was discovered. Arnaud Beckriche, the new Commissioner, overseeing the investigation, leaves a week to his team to solve the case before transferring it to the criminal brigade. For her part, Josephine languishes in a firm specializing in business law when Eric Edelman comes to offer to defend the son of a famous cosmetic surgeon, accused of having ordered the murder of his father.

Despite the strong objections of Beckriche, Laure, Gilou and Fromentin are convinced that they must stay on the trail of the Camara brothers. They discover that their homework is only a facade, behind which lies a traffic of contraband cigarettes. In the field, Gilou confesses the whole truth to Laure about the bullion. For his part, Tintin has to deal with the arrival of his son Ruben, who came to spend a few days with his father. In addition, Laure's investigation into Josephine's rape is progressing.

As police close in, Cann plans to make a run for it. But first, he reaches out to Edelman, asking for his help. Josephine intervenes in the investigation but is not immediately trusted. Meanwhile, Laure and Gilou still have not been cleared of wrongdoing by Internal Affairs.

Laure's team tracks down Stephane Jaulin, whose lawyer turns out to be Pierre Clement. The investigation widens to include other possible suspects.

Gilou is instrumental in helping Cisco's gang acquire a stash of weapons for the upcoming heist.Laure confronts him.Meanwhile, Edelman must learn how to best act in Lola's defence

The police concentrate their efforts on putting Niko's prostitution ring under surveillance in the hope of tracking down a man who is an essential link in the investigation. Meanwhile, Bremont puts pressure on Gilou, prompting Laure to jeopardise everything to help him, and Roban suspects someone may have betrayed him.

Laure continues to protest that the serial killer is still at large, despite the evidence and opposition from her team. Meanwhile, Clement defends a young offender with a troubled past and Judge Roban ploughs on with his corruption inquiry - sparing no one in the process.

New evidence emerges which proves damning for Jaulin. Herville presses on his team to nail the mugging ring. Josephine Karlsson comes up against an infamous, amoral lawyer in court.

Laure tells Ali that Gilou has infiltrated Cisco's gang. To protect him, they'll need to play for time in their investigation - but their efforts are jeopardised when Judge Bourdeiou orders the arrest of Cisco's son Titi.

Kolabi is taken into custody, Karlsson attends court to defend victimised illegal immigrants and Roban attends a meeting with Prosecutor Machard.

With Gilou facing the possibility of prison, Laure's team try to recover their reputation by taking on a case that no-one else wants - the murder of an identified minor in a run-down part of town.

The police investigation screeches to a sudden halt when Souleymane disappears. How and where will they find him? Meanwhile, Laure flouts the ban on seeing Gilou, who has got himself hired as a bouncer in Cisco's nightclub. There he meets the security manager, Cisco's son Titi.

The police make an appeal to the Press and get their hands on Elina's diary - which reveals she had friends in high places. Pierre discovers a connection between the murder victim and a childhood friend of his, now a wealthy businessman - and it seems they met the day before she died.

The Koné case takes a new turn with the destruction of a bank by a group of activists from the far-left. The lawyer Josephine Karlsson must come to the defense of Mary. but is retained by the team captain Laure Berthaud in the case of the student found dead, torn apart by a roadside bomb. Meanwhile, Josephine's associate, Pierre Clement, dreams of big business but having accepted crime lord Johnny Jorkal's request to defend him, he cannot help wondering why Jorkal has chosen him over someone more experienced. As for Gilou, he is approached by the nightclub owners who would like something done to resolve their problems with the authorities...

Roban falls into a trap set by Joséphine and Edelman, whose professional partnership is now, however, on the rocks. Laure and Gilou continue to work on the investigation they've officially been taken off, identifying a suspect who may have been involved in the money-laundering operation. Beckriche's loyalty to his former boss is put to the test.

Ryan is not telling the whole story, so Roban decides to lock him up. The banknotes recovered from the robbery lead police to take their investigation to a nearby housing estate. Meanwhile, a link is uncovered between Wang and Herville, and Joséphine builds a rapport with her cellmate, Lola.

A prominent ministerial adviser, who has links to prosecutor Pierre Clement's close friend Benoit Faye, joins the list of suspects for the ruthless killing of Elina Andrescu. Meanwhile, Captain Laure Berthaud comes up against lawyer Josephine Karlsson during an inquiry into a double murder.

A public prosecutor is teamed with a hardened police captain and a magistrate to identify a body found discarded in a skip. As the case unfolds, their investigation uncovers deception and political intrigue.

Berthault and her team are frustrated by new custody laws which ensure the presence of a lawyer during interviews.

When the police raid the Sarahoui's flat, Gilou takes the opportunity to break into their nightclub and retrieve incriminating evidence against him.

The interrogation of the Camara brothers does not allow Laure to move forward, but Brémont informs him that his informer told him that Drissa and Bakary had taken part in a burglary, without the stolen gold being found. Josephine wakes up under a bridge, convinced she has been raped. She asks Laure for advice but categorically refuses to lodge a complaint, which could be detrimental to her career. Roban contacts Marianne because he wants to see her. At the trial, Rudy revisits his version of the facts and charges Thomas Weber.

Now in prison, Gilou makes headway as an informer and gets close to Cisco, a dangerous convict coming to the end of his sentence, who is being monitored by the police. Josephine Karlsson meets Souleymane, the 13-year-old Moroccan boy accused of the murder Laure and Ali are investigating.

A blunder by the depleted detective team has a shocking outcome, while what Moldovan also sells is revealed. Will Edelman's bluntness sway Josephine? Roban runs out of options.

Pierre begins divorce proceedings after his estranged wife is implicated in a drug trafficking scandal. Josephine defends a man accused of committing brutal acts of torture, while Gilout's drug addiction tests Berthaud's patience

When Laure and Gilou, under investigation by Internal Affairs, are taken into custody, Tintin is torn between his loyalties to his former colleagues and his new job. Josephine also faces a moral decision about how best to fight Lola's case.

With Benoit Faye in intensive care following an assassination attempt, the prosecution in the Andrescu case has lost its main witness. The events leading up to the sisters' double murder are reconstructed using Benoit's recollections.

Laure follows the drug traffickers’ courier to a warehouse in Aubervilliers, where the investigation suddenly acquires a new dimension. Meanwhile, still frail, she struggles to cope with the responsibilities in her personal life. Joséphine has a hearing with the judge. And Roban pursues a case of negligence at a hospital by involving the hospital director.

The identity of the second body is revealed to be that of missing girl Celia Morau and the police begin to search for a serial killer, delving into the Paris underworld for clues. With little progress in catching the culprit, Judge Roban threatens to hand the case over to the Serious Crime Squad, but an important breakthrough occurs.

Laure and Ali identify 'The Alsatian' and get to work on a tracking device that was hidden under his car by members of a rival gang. Josephine tries to help Souleymane but her attempts are short of adequate.

Laure and Gilou sink deeper into taking illegal measures, risking yet more grave repercussions. Their former team member Tintin is tasked with investigating their methods. Meanwhile, Joséphine does her best to protect Lola. However, she proves to be a most uncooperative defendant - for reasons that Joséphine understands only too well.

Berthaud stakes out the Turkish restaurant that the Kurdish suicide victim was known to frequent and uncovers a work crew of illegal immigrants.

The fiasco of the search of the Roma camp leads the police to resume the investigation of the Bac. Arnaud Beckriche asks Laure and his colleagues to focus their efforts on Jolers and Calvi to establish the extent of corruption. Herville has confirmation that one of his men has warned the mayor of the operation to make it fail. To appease her revenge, Josephine takes action. In addition, Romy’s health is improving.

Rachid is dead, causing problems for both Karlsson and the police. Gilou has to investigate a murder linked to a gay nightclub.