England, 1926: Wedgefield Manor, deep in the tranquil Essex countryside, provides a welcome rest stop for Jane and her matchmaking Aunt Millie before their return to America. While Millie spends time with her long-lost daughter, Lillian, and their host, Lord Hughes, Jane fills the hours devouring mystery novels and taking flying lessons – much to Millie’s disapproval. But any danger in the air is eclipsed by tragedy on the ground when one of the estate’s mechanics, Air Force veteran Simon Marshall, is killed in a motorcar collision.