Skyfire - Dreamslinger Fantasy Adventure Series, #2

Four incredibly powerful Dreamslinger stones have revealed themselves to the world. The struggle to control them continues. After Alex McCray and his friends escape the chaotic events brought on by billionaire Rupert Kline, the team retreats to San Diego where Alex is forced to reveal a dark secret from his past. But he soon realizes he isn't the only one with a secret. An obsessed archeologist discovers a Dreamslinger stone in South America that grants him phenomenal powers.
Alex, Emily, Scott, and Christina must band together and confront their past to save the world's future. If you like exciting adventures and mind-bending storytelling, you'll love R. J. Johnson's highly anticipated sequel to Dreamslinger.