Summary A newly emerged photo of her missing son awakens new hope in Sophie Cross. She also receives support from her husband Thomas Leclercq, who, through new evidence, sets out with Sophie to find Arthur, who disappeared more than three years ago. Sophie also gets unexpected support from her superior Gabriel Deville, who advises her face to face: Never give up. The chief investigator, however, gets himself at the center of official investigations. After the murder of a private detective, the murder weapon caused a stir: the same pistol was used in a robbery five years ago. At that time, diamonds worth millions were stolen. Now comes the questionable methods Deville used to put the prime suspect, Joseph Montoya, behind bars. Office chief Leclerq has no choice but to suspend his chief investigator. Now it is up to Sophie - together with Commissioners Amina Dequesne and Fred Fontaine and coroner Alexander Brandt - to clear up contradictions and open questions in order to find the murderer and to exonerate Deville. Meanwhile, Sophie meets a colleague from her legal days again: Defense attorney Olivier Marchand urges Montoya to be got out of prison as soon as possible.

• Crime
• Drama
• Mystery
• Thriller