The Hummel case has bothered William Wisting for more than six months.
The investigation into what happened when taxi-driver Jens Hummel disappeared has been fruitless, and he has to endure criticism.
A crucial discovery directs suspicion at Dan Roger 'Danny' Brodin.
The problem is, however, that Danny is already in prison, convicted of another murder.
Wisting is accustomed to building up a solid case for the prosecution, but this time things are different.
Now he has to use all his expertise and experience to unpick a case that other people already believe to be over and done with.
He follows his own convictions - all the way into the courtroom.