Greyson Gray: Fair Game by B.C. Tweedt

Stopping the terrorists only made them madder. The twelve-year-old secret savior of thousands, Greyson Gray, is given a new identity and forced into seclusion to hide from the Eye of Eyes – the most wanted man in the world and the leader of a rising terrorist group trying to divide the United States in a new civil war. But Greyson can only be secluded so long. Drawn toward suspicious activity at the massive Iowa State Fair, Greyson and his faithful friends uncover a plot even more insidious than before – one that threatens the fibers of the nation and possibly the next president of the United States. For Greyson everything is on the line – his father's whereabouts, his relationship with Sydney, and the lives of everyone he loves. With new weapons, a new rival in love, and new enemies, there's no holding back. It's all fair game.