What is the author's tone in The Dreams of Ada by Robert Mayer?

The tone of this book seems that it should be considered impartial or objective. However, as the author concentrates his narration on Tommy Ward and, especially, his sister Tricia, the reader begins to realize that the tone leans more toward the subjective. The author clearly has an opinion about the case on which he is writing and an affection for the people involved, particularly Tricia Wolf. Tommy Ward confessed to killing Denice Haraway and later made a statement in court that further offered the impression that he was guilty. However, due to inconsistencies in the confession, it appears that Tommy Ward was simply a stupid, scared boy who did not realize what it was he was doing. By confessing, however, Tommy Ward placed his entire family, especially his sister Tricia, in the terrible position of having to defend him and their family name to the outraged people of Ada.