Falke teams up with BKA investigator Julia Grosz on a murder case.

Falke and Grosz investigate after a natural gas engineer is found dead.

Falke and Grosz are assigned to a right-wing activist's security detail.

Two shots were fired from Falke's weapon. He and his colleague Grosz come under suspicion and have to face internal investigations. But there are also others who had an interest in the young woman's death. Were Falke and Grosz used and should they now be made scapegoats or has their use actually gotten out of hand?

Falke and Grosz investigate a series of burglaries in Hamburg.

Falke and Grosz investigate after a sniper targets a truck driver.

Falke and Grosz investigate a murder in Hamburg's red light district.

A journalist asks Falke for help investigating an allegedly illegal real estate deal on the island of Norderney.

A botched investigation leads to desperate measures for Falke and Grosz.

Falke and Grosz are entrusted with a delicate task under strict discretion: 17-year-old Juan Mendez has disappeared from a fine boarding school where celebrities and elites from business and politics have their children educated. Juan's father is the ambassador of an authoritarian country. The questionable despot is known for having members of the opposition and journalists arrested and tortured. While Juan's girlfriend Hanna has the worst fears, his best friend August suspects that the boy just wants to avoid the official celebrations of the state visit. Whatever the reason, Juan's disappearance puts the Bergsons, the teachers who run the school, in distress. The good reputation of the school is its most important asset. In the course of the investigations by Falke and Grosz, the boy's bodyguard comes under suspicion, especially when a blackmail letter appears: Juan's kidnappers are trying to free imprisoned opponents of the regime and journalists.

When Julia Grosz's friend Ela, who infiltrated Hamburg's left-wing autonomous scene as an undercover investigator for the LKA, disappears without a trace, Grosz sets out to look for her. Under a false identity, she goes into the hedonistic, liberal milieu in which her friend seemed to have lost herself.

When his 17-year-old son Noah disappears, Jon Makoni turns to the police in desperation, even though it could be dangerous for him and his wife Hope to be targeted by the authorities: even though the Makonis have been living and working in Hanover for years , they have no papers and are therefore effectively non-existent. The investigators Falke and Grosz initially search for a smuggling network in Hanover. An unknown body is found in a truck.

In the hope that the investigators will help him find his son, Jon offers himself as a witness. In order to clarify the identity of the dead man and save the missing Noah from a similar fate, Falke and Grosz penetrate deep into Hanover's shadow economy.

A stranger asks Thorsten Falke to meet him. He hopes, he says, that the commissioner will keep a promise that is more than 20 years old and help him out of an emergency. Since the stranger demands a commitment without revealing the further circumstances, Falke refuses. Shortly afterwards the man is pulled dead from the Elbe. It turns out he had been living under a false identity. In order to find out who the man really was, Falke and his colleague Julia Grosz have to delve deep into their own past. And with the man the two ultimately suspect, nothing seems to be as initially assumed.