Berlin in 1930 is a city of dark paranoia and covert power struggles, where violence can erupt at any moment. The Brownshirts dominate the streets, but the Red Front is building its insurgence. Gaelle, a beautiful but desperate young prostitute with a scar across one side of her face, trades in something far more powerful and dangerous than sex ... information. To possess her, men will do more than pay, they will tell her secrets. What Gaelle wants is protection. Felix, a sixteen-year-old boy with a lame foot, negotiates Gaelle's price, accompanies her in limousines when she feels threatened, and reminds her to take care of herself. But can he really keep her from harm? Armina Treffen is an investigator for the Berlin Police. Several women's bodies have been found in the park, murdered in the same manner, and Armina, too, seeks Gaelle's confidence to help her catch a serial killer.