Let me preface this by stating I really enjoy this series despite the ever lengthening periods between the release dates.
Despite my enjoyment of the previous installments this one is not just disappointing it seems little more than filler for an author experiencing writer's block. The book is not just short, it is triple spaced between paragraphs turning a modest 350 pages or so into and effective 250-275 pages of actual story. Worse yet, this short story covers little more than a week in the life of the hero. Truth be told little other than excessive pointless verbal diatribe and a couple quick trips to the labyrinth occur prior to the last 30 pages of the book, during which the only significant actions of the story occur.
Were this story edited for content and the excessive verbal diatribe reduced to something more reasonable, you would get little more than 4 or 5 chapters at the beginning of the book fans of this series might have been hoping for. Instead we have to wait for the next installment and hope the author has overcome his writer's block.