Köln. Public prosecutor Wolfgang von Prinz is alarmed: Ingo Broich, the managing director of the cleaning company of the same name, was stabbed to death in his neighborhood. Everyone in this upscale Cologne neighborhood is well known. But his wife, attorney Beate von Prinz, also has close business ties to the murder victim's father.

A failed assassination attempt at a major international conference leads Eisner and Fellner into danger.

Lürsen and Stedefreund embark on a controversial murder investigation.

The murder of a journalist is linked to a famous pop singer. [Münster]

Freddy and Max are faced with a mystery when a child is kidnapped on the street. [Köln]

Falke investigates a series of car arsons. (Hamburg)

Jingle bells on the Kiel Fjord: while Commissioner Borowski and his colleague Sarah Brandt are celebrating Julklapp in the Presidium, a murderer is preparing a dark crime in neighboring Schleswig. At the Lucia Festival parade at a Danish school, a man suddenly caught fire. Kriminalrat Schladitz, who spent his childhood in this place, becomes an involuntary witness to the brutal attack. The dead man, Michael Eckart, was the headmaster here and is a member of the Danish minority. At first everything indicates that the murderer can be found in the immediate vicinity of the dead man.

A nighttime emergency call from a moving car alerts the police in Carinthia: "Eisner, BKA Vienna, service number 318-12-58. Need support!" A short time later, Lieutenant Colonel Moritz Eisner is found seriously wounded by a shot to the head and motionless behind the wheel of his car in a quarry. When he wakes up in the intensive care unit, he has no idea what has happened. He suffers from "retrograde amnesia", which blocks out the traumatic experience itself. A fatal consequence of the gunshot wound.

Bibi Fellner tackles the case of a twelve-year-old boy accused of a brutal act of violence.

Thiel and Boerne investigate the murder of a well-known artist. [Münster]

Falke and Lorenz investigate a murder on the North Sea island of Langeoog. (Hamburg)

Weimar's Sausage Queen goes missing and a surprising turn of events occurs when the police get a phone call.

The geriatric nurse Sabrina Dobisch witnesses a traffic accident and bravely tries to save the life of the young pedestrian Christian van Meeren. She then accuses the driver Doris Ackermann of premeditated murder. While Sabrina is celebrated as a courageous rescuer and enjoys public attention, Inspector Borowski remains skeptical: Apart from the testimony, nothing indicates a capital crime. Until his colleague Sarah Brandt finds a gun in Doris Ackermann's glove compartment. Is there a connection between Christian van Meeren and Doris Ackermann? And what role does the piano teacher André Rosenthal play, who often spent time near the dead man?