"Undercurrent"

New from HarperTeen: Undercurrent by Paul Blackwell.

About the book, from the publisher:

A shadowy figure. An intense roar. The sensation of falling—fast.

That's all Callum Harris remembers from his tumble over the waterfall. But when he wakes up in a hospital bed and finds his best friend trying to kill him, Callum knows something is seriously wrong. Unfortunately for him, the mysteries are just getting started.

Why are his parents acting like he's some big sports star all of a sudden? And why are all the buildings in town more run-down than Callum remembers? Worst of all . . . what happened to Callum's brother? Either Callum has gone seriously crazy or something happened when he went over the edge of the falls. Something impossible. Callum needs answers, and now. Because in this twisted new version of the life Callum knew, his former best friend isn't the only one who wants to see him dead.

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