In Undercurrent, Paul Blackwell's fast-paced teen thriller, sixteen-year-old Callum Harris survives a plummet over a waterfall but wakes to find himself in a life that's totally different from the one he knew. His parents were separated. Now they're together. His brother, Cole, was a sports star. Now he's paralyzed. And Callum, who used to be quiet and sort of unpopular, is suddenly a jock with two hot girls after him. But there's one difference that matters more than all the others combined: His former best friend wants Callum dead. And he isn't the only one. Tense and original, Undercurrent is a psychological thrill ride with sci-fi elements that will appeal to fans of Neal Shusterman. The Bulletin of the Center for Children's Books said, "the riveting opening and intense final scene will keep genre fans satisfied and breathless," while ALA Booklist called it "a menacing, suspenseful thriller."