[1][2][3][4] In Berlin, the pederast serial killer Gabriel Engel, who later admitted to brutally killing 13 boys and painted impressive religious works of art with their blood, is accidentally taken during an overnight operation.

In the small village of Herzbach, memories of the unsolved murder of 12-year-old Lucy are still alive and the crime is attributed to Engel.

Michael Martens, a police officer from Herzbach, decides to travel to Berlin to talk with Engel.

Finally, Engel tells Martens the story of the murder of Lucy, which he claims to have not committed, but only observed.

The desperate Martens then decides to kill his son, but in the meantime, Commissioner Seiler finds out that Engel has committed suicide and that Martens has been tricked by Engel as a means to kill beyond the grave.