The Shade of the Moon / Susan Beth Pfeffer / 288 pgs.

This is the fourth and hopefully final book in the Life As We Knew It series.  The first book begins with a meteor striking the moon which causes a lunar impact that catastrophically alters the earth's climate and results in mass devastation.  This story is told through teen Miranda's diary and is a very satisfying read.  Additional characters are introduced in the following 2 books and lives and story lines intertwine. Somehow, a mere 4 years after the lunar disaster, the world has lost it's mind in the fourth book and society is functioning in a strict caste system.  This story is told through brother Jon's experiences and lacks credibility as to why society behaves as it does.  As a read alone the story may stand up but as an extension of the other 3 books it just doesn't cut it.  Characters are not believable.  The author admits in her author notes at the end of the book that the book was written in part because her vet asked her to continue the series and that her publishers at Houghton Mifflin Harcourt hated it--so there you go.