The only way Cilla van der Zee can survive the German occupation of the Netherlands is to do the unthinkable--become a spy for the Nazis in Britain. She soothes her conscience with a plan to abandon her mission and instead aid the Allies. Her scheme is thwarted when naval officer Lt. Lachlan Mackenzie finds her along the Scottish shore and turns her in to be executed.

But perhaps she is more useful alive than dead. British intelligence sends her to Scotland to radio misleading messages to Germany, messages about the naval base at Scapa Flow to be crafted by Lachlan. At the station in the lighthouse at Dunnet Head, Lachlan and Cilla must work together if the war is to be won. But how can he trust a woman who arrived on his shores as a tool of the enemy--a woman certain to betray both him and the Allied cause?

Master of World War II fiction Sarah Sundin takes you to the wild Scottish seaside, where danger lurks under the surface of the water--and in the depths of the human heart--for a WWII tale you won't soon forget.