Hoffman Mary Hoffman 
Stravaganza City of Secrets [EPUB ebook] 

When Matt is unexpectedly transported to the Scriptorium of Padavia (real-life Padua) University, he discovers he is a Stravagante who can travel through time using his talisman, a leather-bound book. Together with Luciano, now studying at the University, and Arianna, in disguise as a boy, he must fight the dangerous di Chimici clan who are on the verge of making a terrifying breakthrough into our world.A breathtaking and thrilling novel that will delight all Stravaganza fans.