A beggar-girl finds a mutilated corpse in Vienna's slum quarter. The secret services warn Oskar that the investigation is not the concern of the Leopoldstadt police. However, when Oskar receives anonymous messages relating to the murder, he can't resist delving further.

When a depressed Hungarian Countess drowns in the bath of her luxury hotel suite it looks like suicide. Intense scrutiny falls on her psychoanalyst, Max Liebermann. Investigating Officer Oskar Rheinhardt teams up with Max to solve the riddle of the Countess' death and clear Max's professional reputation.

A monk has been found brutally murdered in his monastery. Suspicion falls on a religious Jew who had reprimanded the monk for spreading anti-Semitic rhetoric. To untangle a web of deceit Max and Oskar will have to understand the power of belief.

Junior doctor Max Liebermann asks to observe a criminal case for his studies. Inspector Oskar Rheinhardt reluctantly offers him full access to the case of a murdered woman.

Max applies his neurological expertise to the case of a retired soldier, Captain Steiner, who is convinced that he is cursed and tortured by vengeful spirits.

Vienna, 1909. Oskar is baffled when the director of security agrees to a secret rendezvouz with a notorious, recently captured criminal.

With Max in the hospital, Oskar is racked with guilt but is determined to unmask the traitor in the heart of the Austrian establishment. He realises just how powerful this enemy is when he finds himself framed for murder.

Oskar is called away from Max and Clara’s engagement party with news of a murder in a Spittelberg brothel. Oskar is quick to make an arrest, but Max is not convinced that they have the right man.

A young seamstress is murdered in a luxury fashion house. Oscar and Max are initially perplexed, but further clues are revealed when Max receives a letter at his new practice.

When a famous film star dies during the premiere of her new film, Max and Oskar’s investigation gets them embroiled in the dark underbelly of stardom and far-right politics.

Max's nephew suffers a breakdown after the drowning of a fellow cadet at a military academy. The police department refute suspicions but Max shows Oskar a pattern of violence and believes that they're looking at a murder investigation.