Björn Thors

One year after the violent eruption of the subglacial volcano Katla, the peace and tranquility in the small town of Vik is dramatically disturbed.

Police profiler Arnar is sent back home from Oslo to his native Iceland to investigate the country's first serial killer case. He teams up with the local senior cop Kata.

Halla becomes a determined environmental activist, but this threatens a long-held hope of hers.