On the German-Austrian border lies a strangely staged corpse. Ellie Stocker from Berchtesgaden and Gedeon Winter from Vienna. She highly motivated, he a drained cynic.

An entrepreneur is brutally murdered. There are parallels to the first case. A phantom drawing from the culprit shows a devilish grin. And what does the message of the "red season" mean?

In search of a missing woman, Stocker and Winter investigate a cult that lives in the woods. You can not prevent the next murder.

Stocker and Winter try to trap the murderer. For that they are crossing the border of the legal. But the culprit is one step ahead of them and plays by its own rules.

The track of the offender has been lost. In unexplained murders, Ellie and Gedeon are looking for new clues - and do not suspect that the murderer has long planned larger.

A heavy hit by the killer can not be prevented. He also takes revenge on Ellie for her public comment about him. This continues to put pressure on the detective.

A man is shot dead by the police. Gedeon does not think he was really the Krampus murderer. No one shares his doubts, not even Ellie. The file is closed.

A year later: After a body finding, Gedeon can convince Ellie to reopen the case. Then he makes a shocking discovery.