Castle Drive into his motion regarding the claims made in Britt's affidavit, with the court stating he must obtain a pre-authorization for what should be a separate motion filed in relation to the results of the DNA testing. On April 19, 2011, the United States Court of Appeals granted a pre-filing authorization relating to his DNA claims, reversing the decision of the district court, and remanding his appeals for further proceedings. An evidentiary hearing relating to the claims within the Britt affidavit, the hair and fiber evidence, and further testimony pertaining to Stoeckley's verbal confessions, was held in September 2012. However, in July 2014, Judge Fox ruled against MacDonald's appeal, upholding his convictions. Fatal Vision In June 1979, MacDonald invited author Joe McGinniss to write a book about his case. Initially unsure of MacDonald's guilt or innocence, McGinniss agreed to his request, and was given full access to MacDonald and his defense team during the upcoming trial. The book McGinniss authored relating to the murders, Fatal Vision, portrays MacDonald as "a narcissistic sociopath" who was guilty of murdering his family and who believed in his ongoing capabilities to deceive both legal personnel and personal acquaintances. McGinniss quotes a 1979 report compiled by a psychologist named Hirsch Lazzaar Silverman, who stated MacDonald "handled his conflicts by denying that they even exist", adding that MacDonald lacked any sense of guilt, had been capable of committing "asocial acts with impunity", and had been "incapable of [forming] emotionally close" relationships with females of any age. Silverman further states MacDonald had avoided and resented his commitments as a husband and father and that, given his ongoing "denial of truth", he would continually seek both attention and approval. Fatal Vision also alleges a possible motive for the killings. As MacDonald was regularly taking the amphetamine Eskatrol in an effort to lose weight via a weight-control program for his Green Beret unit, McGinniss suggests MacDonald may have murdered his family in a spur-of-the-moment fit of psychotic rage as a result of his frequent consumption of the amphetamines. Furthermore, the book emphasizes the fact MacDonald worked extremely long hours in several medical employment roles in 1969 and 1970, and his extensive social and family commitments, resulted in his suffering from an increasing lack of sleep. Reportedly, MacDonald had expected McGinniss's book to profess his innocence and the ongoing miscarriage of justice to which he had been subjected.<ref name="Since