I Know Who You Are: A man is found dead in the cold water of his bathtub. Potential suspects seem to have evidence planted on them. As the investigation unravels, the police discover a story going back to the GDR.
Hatred Is My Hobby: The team investigates the murder of a young climate activist. Online trolls have been sending her numerous hate messages and death threats. They become the prime suspects.
Death Flight: A crash of a light aircraft bring the investigators to the scene. Traces of sleeping pills are found in the dead pilot's system, leading to a murder inquiry.