The first book from the "J" pile is one that I've been meaning to pick up for quite some time now.
From the Blurb:
There have been a strange succession of violent deaths at Helsinki tube stations. The police are baffled: nobody has seen anything and the tapes from CCTV show nothing.
Someone called out his name: rapidly, over and over, as if they were thrashing him over the head with a twig. 'Mikko! Mikko!'