One Step Behind by Henning Mankell

A group of teenagers in costumes are shot celebrating Midsummer in a nature reserve.

A policeman gunned down in his own home.

A young couple and their wedding photographer killed on what should have been the happiest day of their life.

A monstrous killer is loose in the area around Ystad. Who is this murderer? Why does he kill? What do his victims have in common? How intelligent is he that no matter what they do, the police are always one step behind.