The freight train arrives in Berlin. Tempers explode in Charlotte's household. Aspiring inspector Jänicke makes use of a surprising skill.

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.

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.

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.

The ballistics report in a police officer's murder casts suspicion on two colleagues. While her employers are out, Greta steals a moment with Fritz.

Greta witnesses a horrifying scene. In police custody, the Black Reichswehr leaders are visited by a collaborator. Charlotte fights for survival.

A radio announcement makes Rath realize what the Black Reichswehr is planning. Charlotte stumbles upon a find that she hopes will save her life.