At nineteen, Marian Taylor cut herself off from her wealthy, conservative Irish Catholic family and left America to volunteer in the Spanish Civil War--an experience she has always kept to herself. Now in her nineties and diagnosed with cancer, Marian finally shares what happened to her during those years with her granddaughter Amelia, a young woman of good heart but only a vague notion of life´s purpose. Marian´s secret history--of personal and ethical challenges nearly unthinkable to Amelia´s generation, of the unexpected gifts of true love and true friendship--compels Amelia to make her own journey to Spain to reconcile her grandmother´s past with her own uncertain future. Moving and deeply felt, There Your Heart Lies explores how character is forged in a particular moment in history--and passed down through generations.