Black Butterfly

The past is a fire that never stops burning. At a desolate rest area in Kronviken, a woman's body is found - severely burned, unrecognizable, her identity erased by a melted blue cap. For Detective Inspector Maria Wern, it is a gruesome puzzle. For her colleague, Per Arvidsson, it is the beginning of a journey into a past he didn't know he had. While Maria hunts for a connection to a local arson...