Based on its investigation of "who killed Wellington, the dog of Mrs Shears', Christopher discovered that Mother is not dead, and she has to go find his mother in London. A journey that promises golds already difficult to different boy, who strikes when touched and crying when everything is wrong with the order of things.
This book is beautiful, not for the background of the story, which eventually just deals with the common difficulties of family separation, lying, etc. The real beauty is that we manage to persuade to actually read what Christopher had written, we really feel like Christopher, to see everything like him, and that, I think it's a outstanding work on the part of the author.
It remains a beautiful story, the acceptance of differences. Of all the differences.
Because criticize a difference, not reject it.