England, 1948: Semi-retired spy Leo Page and country doctor James Sommers team up to solve a decades-old mystery. When James learns that an uncle he hasn't heard from in ages has left him something in his will, he figures that the least he can do is head down to Cornwall for a weekend to honor the old man's parting wishes. He finds the family home filled with half-remembered guests and unwanted memories, but more troubling is that his...