Phenomena. Book 2, Matilde's quest

"Phenomena is the story of a young boy named Boldon, a mysterious girl named Matilde, and the warrior Spike--survivors of a phenomena that took over Earth years ago. Not an apocalypse ... something far more interesting. Following their adventure at the Golden City of Eyes, Matilde's Quest brings our trio to Valentia Verona (formerly London, England, before the phenomena took place)--one of the most fantastical places on the planet. There, with th...