In the final chapter of the Tucker series, David Johnson introduces us to a new family - a family in need of the kind of help that only Tucker and her family can give.Benjamin Trevathan, who has Asperger's Syndrome and a speech impediment, is a boy saddled with adult responsibilities in the midst of his dysfunctional home. He provides the majority of care for his younger siblings and his mother who is sick with cancer. His stepfather stays gone for...