"The old world has been ravaged by war and disease, and as far as Lynn McBride is concerned, her family could be the last one left on earth. For seven years, the McBrides have eked out a meagre existence in the still, white wilderness of the Yukon. But this is not living. This is survival on the brink. Into this fragile community walk new threats, including the enigmatic fugitive, Jax, who holds secrets about the past and, possibly, keys to a better future. And then there’s Immunity, the pre‑war organization that was supposed to save humankind from the flu. They’re still out there, enforcing order and conducting experiments—but is their work for the good of humankind or is something much more sinister at play? In the face of almost certain extinction, Lynn and her family must learn to hunt as a pack or die alone in the cold."