Van Nieuwerbroek must be released on Hein Berg's orders. When he is found murdered the next day, Stan is the prime suspect. Hein and Lieve suspect that the mysterious Hunter Vaals played a role in the murder of their former colleague Ben. Hein instructs Esther and Dries to find out who Vaals is. This turns out to be a more dangerous task than they realize. Meanwhile, Stan manages to get out of the cell block after an interrogation by the national police. He knows he has to warn his colleagues. But he seems to be too late.