In Undercurrent, Paul Blackwells fast-paced YA thriller, sixteen-year-old Callum Harris survives a plummet over a waterfall, but wakes to find himself in a life thats totally different from the one he knew. His parents were separated. Now theyre together. His brother Cole was a sports star. Now hes paralyzed. And Callum, who used to be quiet and sort of unpopular, is suddenly a jock with two hot girls after him. But theres one difference that matters more than all the others combined: His former best friend wants Callum dead. And he isnt the only one. Tense and original, Undercurrent is a psychological thrill-ride with sci-fi elements that will appeal to fans of Neil Gaiman and Neal Shusterman.