S19, E23: Fashion blogger Heidi Ruland is found bludgeoned to death in her apartment, prompting an intense investigation by detectives Aubinger and Winter. As the investigation unfolds, it emerges that Heidi had an affair with restaurant owner Heinrich Leander, casting suspicion on her husband, Markus Ruland. As layers of betrayal and jealousy emerge, the investigators follow a trail through the glittering world of social media and into the shadows of marital deception.