The Eifel commissioner and a hot suspicion. When the fire watchtower in Wolfgarten catches fire in the middle of the night, Ulrich Reinarz is secretly receiving a delivery of high-quality electrical goods not far away. In the flickering blue light and the glow of the flames, he believes he sees a shadow darting into his barn. Surely just an animal, startled by the sirens, he thinks. A day later, a stranger appears searching for his missing sister. Reinarz chases away the man, who claims she is hiding on his farm, but shortly after, he actually discovers a girl. Scared, wild, and without a voice. Former Chief Commissioner Sonja Senger is also startled in her forest house at the end of the power line by the blazing flames in the night sky. When a body is found at the fire scene shortly after, it is Frie.