Identical twins Dorothy and Constance are haunted by their parents’ mysterious disappearance near Kirkwall in the Orkney Islands. To start anew, they settle on the neighboring island of Selkie Holm in the autumn of 1941. Against the backdrop of World War II, a German U-boat sinks the British battleship HMS Royal Oak in Scapa Flow. Eight hundred and thirty-four men lost their lives, prompting Winston Churchill to order the construction of defensive barricades between the islands. Italian prisoners of war, captured in North Africa, are transported to Selkie Holm to quarry stone and build the barriers. Many of the islanders are hostile towards the prisoners, but the twenty-three-year-old sisters see […]