An Amazon''s Best Book A Washington Post Notable Book A Goodreads Choice Award Nominee A Library Journal Top 10 Book A BookPage Best Book An atmospheric, transporting tale of adventure, love, and survival from the bestselling author of The Snow Child, finalist for the Pulitzer Prize. In the winter of 1885, decorated war hero Colonel Allen Forrester leads 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. Leaving behind Sophie, his newly pregnant wife, Colonel Forrester records his extraordinary experiences in hopes that his journal will reach her if he doesn''t return - once he passes beyond the edge of the known world, there''s no telling what awaits him.