Schwarzach 23 und der Schädel des Saatan(2018)

Overview:

When the head of Herbi Zidinger is discovered on the head of a scarecrow, Chief Inspector Franz Germinger Jr. is immediately on the scene. His sister discovered the skull, so Germinger Senior quickly learns about the murder and, as usual, gets involved in his son's investigation. The father-son team soon have three suspects.