As one of the Navy's most skilled mapmakers, Merry knows that lives depend on her work in the War Office. But when a family crisis draws her back to her beloved Cornwall, she finds herself working alongside Jake, an enigmatic American officer, on secret operations spanning the rugged coasts of Cornwall and Brittany which she knows so well.
As rumours and suspicion swirl around her family, Merry is increasingly drawn to Jake, despite the defences she's built around her heart. It's a dangerous time to fall in love; the tides of war are rising and there is everything to lose…