Rickie Masters is married to Madeleine, who is sitting out the war in the country with their children. Their domestic serenity is shattered when Rickie falls in love with Madeleine's sister, Dinah, and they begin a clandestine, guilt-ridden affair. When Madeleine discovers their infidelity, accusations are hurled and hard choices are made. Then, a year before the war officially ends, tragedy strikes, and it is only after an estrangement of fifteen years that Madeleine and Dinah will begin to struggle toward some kind of reconciliation.

Shifting between the three characters' viewpoints, and shuttling seamlessly between past and present, The Echoing Grove is a story of life: messy, unpredictable, and unstoppable. It is about family, the things that hold us accountable, the events that lead to life-altering decisions, and the emotions that make us human. And above all it is about love: romantic love, married love, familial love, and illicit love. The heart wants what it wants, regardless of the cost.