Greta goes on a romantic outing with Fritz. Krajewski finally reveals where the film is hidden. A new patient is brought to Dr. Schmidt for treatment.

Rath’s pharmacist gets shady instructions. Rath learns who’s behind the train smuggling operation and why, and recalls the last time he saw his brother.

While interrogating König, Rath loses control of the situation. Charlotte moonlights to make ends meet. An alter ego commits a betrayal.

In 1929, a freight train traveling from the Soviet Union is hijacked. Meanwhile, Chief Inspector Gereon Rath from Cologne pursues a mission in Berlin.

Trochin transacts his deal with Benda. Moritz snoops in Wolter’s cellar. Rath and photographer Gräf gather proof of a secret air force base in Lipetsk.

A mass grave is found in the woods. Charlotte’s sister Toni makes a troubling discovery. A meeting with Homicide leads Rath to a dreadful realization.