Sacrifice is the narrative of adviser surgeon, Tora Hamilton, who goes to the Shetland Islands, 100 miles off Scotland's north-east shore, with her partner, Duncan. Deep at the peat soil round her new house finds the body of a young woman using marks carved into her skin and also a gaping hole where her heart overcome. Ignoring warnings to leave well links that are terrifying are uncovered by Tora to some legend that might never have been confined to the pages of their story-books.