 Although he started with a "gut feeling" that Richard was innocent of murdering his nephews, the Princes in the Tower; Fields claims to have investigated the facts as he would for a client he was representing, and he structured the book like a lawyer's brief, identifying the evidence and then drawing the logical implications from the facts.In the same way as in a brief, he discussed the weaknesses in earlier authors' treatments of the same subject, being particularly critical of Alison Weir and her book "The Princes in the Tower"