A girl with a barcode tattooed on her arm is found dead. It appears that she was murdered in a horrific manner while on the run. The DNA of an old acquaintance is found on her body: Louis Dearden, president of the court of assizes. Wolfs and Eva visit Lies Dewulf and, with some difficulty, manage to get hold of Louis Dearden's laptop. Later, a second girl with a barcode tattooed on her arm is found. She was being held in a house near Maastricht, along with several other girls. Wolfs and Eva go to the house, but everyone has fled. Unexpected help comes from a Hungarian liaison. Marion finds her sister, who has returned. The sister looks very similar to Marion. Inside, however, they are worlds apart.