BOOK ONE: BROTHERS OF THE BLACK CROWN ## Prologue: The Mathematics of Falling *London, Septembe...

BOOK ONE: BROTHERS OF THE BLACK CROWN ## Prologue: The Mathematics of Falling *London, September 7, 1940 — The First Night of the Blitz* The world did not end with a whimper, nor with a bang, but with a low, grinding groan—the sound of a city's bones breaking. It was a sound that vibrated not just through the ear, but through the very marrow, rattling teeth, churning stomachs, turning the bowels to water. The groan came from everywhere and nowhere—from the ancient beams of Georgian terraces