An atmospheric, transporting tale of adventure, love, and survival from the bestselling author of The Snow Child, a finalist for the Pulitzer Prize. In the winter of 1885, decorated war hero Colonel Allen Forrester leaves behind his newly pregnant wife, Sophie, to lead a small band of men on an expedition that has been deemed impossible: to venture up the Wolverine River and pierce the vast, untamed Alaska Territory. While the men knew they would face starvation and danger, they cannot escape the sense that some greater, mysterious force threatens their lives.
Meanwhile, on her own at Vancouver Barracks, Sophie chafes under the social restrictions and yearns to travel alongside her husband. She does not know that the winter will require as much of her as it does her husband and that both her courage and faith will be tested to the breaking point.