Son by Lois Lowry -- 400 pages
Son starts where the first book, The Giver starts, in Jonas' community where everything is in order. When Claire was 12, turning 13, she was assigned to be a birth mother, or a vessel. She carried her product and followed the rules, but somehow something went wrong. The birth went wrong. Her job went wrong.
She was then assigned to work at a Fish Hatchery, but she did not forget the baby that she had carried and seen. When she finds him, she keeps him a secret, telling no one that he is her son, but visiting him often and breaking her heart every time.
Claire's story lasts through the first three books and continues the story of the third book, joining all of our favorite characters and answering the questions that we still had.
This was my favorite book in the series.