"New York Times"-bestselling author Pearson delivers the second riveting tale in this trilogy, the reimagined origin story of the rivalry between SherLock Holmes and James Moriarty told from the perspective of James\'s observant little sister, Moira.. "New York Times"-bestselling author Pearson delivers the second riveting tale in this trilogy, the reimagined origin story of the rivalry between SherLock Holmes and James Moriarty told from the perspective of James\'s observant little sister, Moira.