The Cohesion - Book Three. The Melting, #3

It began in the north, in the ancient cold before the birth of man. Whether from the actions of man or the cycles of the planet, the primordial ice is melting and bringing back to the atmosphere a virus. One with no known cure for modern day humans. Rachel Gerhart has been a survivor her whole life, now she's been changed by the virus that destroyed civilization. She trying to keep her differences under wraps, but Sid Saylor knows her secret.
He's been changed as well. Can their new abilities help with the rebuilding of a human civilization?