The book Blake Masters is reading when the story finds him is Foucault's Pendulum. Fourth time through. Blake Masters chose the corner table at Miller Nichols Library the way his grandfather taught him - back to the wall, clear sightline to both exits. William Masters flew reconnaissance aircraft over hostile airspace for twelve years; the habits came down through two generations like table manners. So did the secrets. A safety deposit box paid for fifty-seven years in advance. Seven leather notebooks. Thirty years of classified research into a frequency - 111 Hz - that medieval builders encoded in stone and a security corporation is quietly weaponizing in the present. The trail runs from Kansas City's SubTropolis, the largest underground business complex in the world, to the real Voynich Manuscript, the Ars Notoria, and the Codex Gigas: three manuscripts no scholarship has ever connected. The Inheritance of Frequency is Book I of the Masters X Trilogy - a literary conspiracy for readers of Umberto Eco and Elizabeth Kostova, grounded in documented places and real acoustic science, beginning where a fired security guard inherits the family business of listening. The opening chapters are free at jasoncholloway.com.