Young Katy Thatcher, the daughter of the town doctor, becomes friends with Jacob, a teenager who is "touched in the head," which allows her to understand what really happened when the unwanted infant of Jacob's sister is found dead.

"It's Christmas time, 1919. Three years before, seventeen-year-old Margot Allan, a respectable vicar's daughter, fell passionately in love. But she lost her fiancé, Harry, to the Great War. In turn, she gained a desperate secret, one with the power to ruin her life and her family's reputation, a secret she guards at all costs. Now Margot's family is gathering at the vicarage for the first time since the War ended. And Harry, it turns out, isn't dead....

Alternates between two stories--contemporarily, seventeen-year-old Jacob visits a daunting Amsterdam at the request of his English grandmother--and historically, nineteen-year-old Geertrui relates her experience of British soldiers's attempts to liberate Holland from its German occupation.