Book excerpt: Kate Westcott, a gifted American art student, has come to Florence to study Michelangelo. Exploring the cobbled streets of the Renaissance city with her fellow student Marco, Kate feels the pull of destiny. And when the two uncover a chamber in a corridor sealed since the time of the Medicis, they make a stunning discovery: Michelangelo’s Midnight Angels—three small, exquisite sculptures long rumored to exist but never before seen. It is the find of a lifetime—and the beginning of a nightmare. Pursued by criminals, suspected by the Rome Art Squad, and navigating the underground network of a secret society, Kate and Marco must use all their cunning to protect Michelangelo’s work—and their lives.