The hunt is on for Edward, who has fled back to England. Meanwhile, Julien and Genevieve conceive an audacious plan to turn Constantin and bring down the Brigada.
Baptiste discovers Edward isn't who he says he is and tracks down Natalie. But his attempt to conceal the truth from Edward has tragic consequences for which he holds himself responsible. Baptiste heads to London to find Edward's ex-wife.
Julien discovers the real reason behind Edward's involvement forcing him to take drastic action to protect his family. A Europol officer takes an interest in the case.
Edward deals with the aftermath of a murder. Baptiste doesn't know who to trust, believing that the level of corruption runs deep after an attempt is made to kill Genevieve and himself.
The retired French detective, now living in Amsterdam with his family, comes to the aid of an Englishman searching for his missing niece - who has been drawn into drugs and prostitution through her involvement with a Romanian gangster.
Baptiste confronts Martha about the secret she has kept from him and goes in pursuit of the money. Genevieve coerces Edward to meet Constantin, only for him to ruin her plans by taking matters into his own hands.
With Alex dead, Emma's only hope is to find her other son Will. And when Julien and Zsofia look to Kamilla and her husband, a new lead is uncovered and a dramatic discovery is made.
As Julien and Zsofia investigate Far Right politician Kamilla Agoston, Emma finds a lead on Alex's computer that takes her and Julien to a shocking and bloody discovery.
Julien and Zsofia track down the tattooed man but he gives little away. Things escalate when the police receive a hostage video, and Emma takes drastic action for her family.