Acceptance is the third and final book in the Southern Reach trilogy by Jeff VanderMeer.  Many readers report it reminds themof the first season of Lost where strange events and even stranger wildlife was present.  The first book "Annihilation" follows the story of the biologist and the other team members as they entered Area X  and document the strange writings and other horrific events that occur.  Authority focuses on the new director, Control, and the outdated government complex charged with the mandate to keep an eye on Area X and for getting information out of the biologist. In Acceptance, a new expedition has been sent to Area X including the biologist and Control.  Control They are determined to deal with what is going on even if it kills one or both of them.  They are also in search of the biologist's husband.  If you remember, he went back to the area in Annihilation. Of course it is possible the biologist also known as Ghost Bird is already dead and what we see now is her avatar.  

This book connects the first two.  It covers more of the early days of  Area X and the events leading up to the twelfth expedition.  It tells the stories of those portrayed in Annihilation such as the lightkeeper and how his presence at the inception of Area X influenced the events to come. Each character's actions and motivations are filled in.  You learn that the area is free of heavy metals, pollutants and and water and air are pure. It is also hostile to humans.

As in Annihilation, the language is beautiful and flowing.  You feel as though you have been transformed to a beautiful, and dangerous foreign world.  Although the entire mystery of Area X is not so much solved in Acceptance, enough of the questions are answered so you feel satisfied.  You do regret leaving this beautiful world full of possibilities.