Four police officers of the SDPJ Hauts-de-Seine, Eddie Caplan, Walter Morlighem, Theo Wachevski and Roxane Delgado have their lives turned upside down when their colleague, Max, committed suicide, following a case in which he is unfairly blamed. They then cross the "yellow line", not hesitating to circumvent the law to achieve their purposes in order to wash the honor of their friend Max.


Season 4
  • 1

    Episode 1


    The Old Fashioned Way: They've barely solved the Russian Mafia case when Caplan, Walter and Roxanne find themselves faced with "Baba" Aroudj, head of the Turkish Mafia. (S4, Ep1)

  • 2

    Episode 2


    My Piece of Hell: The police of police isn't done with the Departmental Service of the Judicial Police group, and the investigation into Caplan's group is led by a devious cop. (S4, Ep2)

  • 3

    Episode 3


    Nathan: The first commando operation that Caplan, Walter and Wassim lead against the Turks, puts "Baba" Aroudj under fire within his organisation. (S4, Ep3)

  • 4

    Episode 4


    Pharoahs: The Great Manitou of the Turkish Mafia organisation has decided to let "Baba" Aroudj go. Fatih Imrali shall serve as an intermediary with Caplan and Walter. (S4, Ep4)

  • 5

    Episode 5


    Comma: By intervening in Marseilles to capture "Baba" Aroudj, Caplan and Walter interfere in an investigation into a bloody heist, committed ten years earlier in Aubagne. (S4, Ep5)

  • 6

    Episode 6


    Bankster: Roxanne and Bernardi find themselves in the middle of a drug deal that leads directly to mobsters Caplan knows well, having used their "services". (S4, Ep6)

  • 7

    Episode 7


    An Endless Game: Caplan and Walter return to Paris. A return motivated by a blackmail forcing Caplan to organise the escape of a mobster who could ruin him. (S4, Ep7)

  • 8

    Episode 8


    To The End and Until The End: At the end of this path of extreme justice that they've carved themselves, love, family and death await them. And they will all pay a heavy price. (S4, Ep8)