In 12th-century Pisa, spice merchant Guglielmo Bonacci discovers his son's gift for numbers, fluency in languages and swordsmanship. The father and son set sail across the Mediterranean, unknowingly charting a course that will alter the destiny of mathematics, trade, and science in Europe. But genius is never without enemies. From the intrigue-filled courts of Palermo to the shifting sands of North Africa, Leonardo’s rise sparks suspicion. As he introduces revolutionary ideas
