Shock spreads across the tiny island of Langeoog when a corpse is found in the dunes. By its side was the cowering teenager Florian, distraught and bloodied. When Inspector Falke discovers he knows the boy, he puts pressure on Lorenz to pursue other lines of enquiry - against Chief Christine Brandner's instructions…

When the team investigate a gas explosion that claimed the lives of two officers, as well as a notorious people trafficker, they find themselves confronted with a wall of silence. With nobody talking, will they manage to crack the central case and begin to unravel the giant web of human trafficking that hides behind it?

The corpse of a German-Syrian is found on the outskirts of Oldenburg. To find an answer, Inspector Falk and his team must hunt down the ringleaders of a criminal network. But as the German-Syrians of Oldenburg have been taking in those fleeing the conflict at home, a collective silence stands in the way of the truth.