A secluded island. A missing woman. An impossible choice. Detective Inspector Karen Eiken Hornby is not the only person to have returned to her native island nation, Doggerland, after years abroad. Following a ten-year hiatus, Luna has chosen to secretly record her comeback album where she was born and raised. Spirits are high among her team at the wrap party, though Karen is less than impressed with the simpering singer. The next morning, Luna is nowhere to be found. Nothing goes unnoticed in the tight-knit community - certainly not the arrival, or disappearance, of a world-famous singer. So, while the rest of the force is frantically searching for a suspect whose brutal attacks on women are increasing in intensity and frequency, a reluctant Karen is tasked with discreetly looking into Luna's whereabouts. As time ebbs away so does the possibility of finding Luna alive, while Karen faces seemingly impossible choices, ones that could spell life or death, both for herself and others.