"In World War I America, magic and science have blended into an extraordinary art. Eighteen-year-old Robert Weekes, a practitioner of empirical philosophy--an arcane, female-dominated branch of science used to summon the wind, shape clouds of smoke, heal, and even fly--dreams of becoming the first male in an elite team of flying medics"--

While armies of the Shadowrealms gather and Machiavelli goes to Alcatraz to kill Perenelle Flamel, fifteen-year-old twins Sophie and Josh Newman accompany the Alchemist to England to seek Gilgamesh.

During a crowded service at a cathedral in Germany, armed intruders in monks' robes unleash a nightmare of blood and destruction. But the killers have not come for gold; they seek a more valuable prize: the bones of the Magi who once paid homage to a newborn savior... a treasure that could reshape the world. With the Vatican in turmoil, SIGMA Force leaps into action. An elite team of scientific and Special Forces operatives under the command of Grayson...