As Confederate and Union forces clash in and around the Missouri community of St. Charles, Constance McAdams fights a war of her own. Her mind has been fractured, her heart ravaged, and her soul nearly torn from its very existence. Her husband, Gavin, threatened by a corrupt sheriff and judge, is the binding that holds her together. With a blessing from an old Choctaw woman as her only weapon, she spirals into a maddening world of crows and spirits as she fights the forces pressing in around her.