Facing a choice of north or south – of home or unfamiliar territory – he has to make the tough call and deal with the consequences. Rivera and Valentina are in Helena, where they struggle to tell allies from enemies. The race is on to get back to Zion and uncover the traitor before disaster strikes. Operating in the open, the game of telling friend from foe becomes deadly. Don't miss book two in a harrowing post-apocalyptic series from the best-selling author of After it Happened.