Desolation — Al K. Line

The last book in The Commorancy series. Letje leaves The Commorancy behind, tasked with dealing with a man that threatens everything Marcus worked so hard to accomplish. Things don't go according to plan and soon Letje and her companions find themselves caught in a dream-life just like the rest of the dwindling population. It's a fight for survival, not only for personal sanity and freedom, but for the very future of humanity. Son of Bird watches from above, amused by the games of man; just like his father.