A black man is found dead floating with a swastika on his forehead. Luc takes the victims son under his care and protection. Fabio helps with the death of a child.
A dead referee not only employs FC Aarau fan Reto Doerig, but also a few dubious figures. The Kapo discovers a body in Villa Mankovsky and arrests the professor and his helpers. Luc puts himself in mortal danger.
Last Words - the search for AnnaMarie continues - the body of a woman is found in the woods. Luc suspects Mario, AnnaMarie's brother, has something to do with her disappearance but Dörig disagrees.
A girl is run over and left seriously injured. The investigation into the driver-fleeing perpetrator leads to the rich Tobler family. Luc allows himself to be co-opted by Professor Mankovsky. Fabio sweetheart already seems to disdain him.
Trio investigates murder in the bizarre milieu of taxidermist. And in case of the ritual murders, Luc's solo effort sets motion in investigation. Anna's new friend Anatol threatens to become the target of the murderous siblings.
Investigation of the murder of a a residential care nurse leads the police to wonder if it was an inside job. Semmelweis is trying to remember the significance of a number. Launer is released from prison.
A second body is found in a coffin Luc is suspected of disposing of the corpse. Pedro is convinced Luc is connected to the organ trade. Semmelweis is acting more erratically.
"Child Burial". Anker's painting Kinderbegräbnis sits at the core of Season 5's mystery. A child's skeleton is placed in front of the painting, but the motive is obscure. Fabio and Luc have a hard time managing business with Erika away.
Luc is on the run from police desperate to clear his name and find the real murderer. Semmelweis is deranged. Pedro is searching for the connection to Luc on his own.