Sea of stone / Michael Ridpath.

When Constable Pall Gylfason gets a dispatch call to investigate a suspected homicide in a remote farmstead, he is surprised to find that Detective Magnus Jonson is already at the scene. Magnus identifies the dead man as his estranged grandfather. As Pall begins to review the crime scene it becomes apparent that forensic evidence has been tampered with and that Magnus's version of events doesn't add up. Before long, Magnus is arrested for the murder of his grandfather. When it emerges that his younger brother, Oli, is in Iceland after two decades in America, Pall begins to think that Magnus may not be the only family member in the frame for murder...