For several weeks, Viola felt that someone was watching her. She imagined a shadow had stuck to her, but whenever she turned around, there was no one there. Her friend also believed it, but for the past few days she hadn’t been answering calls and had disappeared somewhere. Now Viola prefers to stay at home, watch series, and order food via a delivery service. The last delivered pizza was left untouched. Andreas Winkelmann is a well-known German author of plot-driven fiction and has written more than 20 national bestsellers.