One cold morning in December, in a small rural town on the Swedish coast, Ake Melkersson is on his way to work when his car breaks down. Luckily he spots a garage nearby, but as he approaches he realises something is wrong. The owner of the garage lies dead, sprawled on the ground, his lower body crushed where a car has repeatedly driven over him. The murder investigation is led by Inspector Christian Tell who is something of a lone wolf. But he has very few clues to go on and the deceased's wife is out of the country on holiday.