Caden Bosch is on a ship that's headed for the deepest point on earth: Challenger Deep, the southern part of the Marianas Trench. A brilliant high school student whose friends are starting to notice his odd behavior, he is designated the ship's artist in residence in order to document the journey with images. Caden pretends to join his school's track team but spends his days walking for miles, absorbed by the thoughts in his head; he is split between...

"All it takes is one hit on the football field, and suddenly Ash's life doesn't look quite the way he remembers it. Impossible though it seems, he's been hit into another dimension--and keeps on bouncing through worlds that are almost-but-not-really his own. The changes start small, but they quickly spiral out of control as Ash slides into universes where he has everything he's ever wanted, universes where society is stuck in the past...universes...

"In a world where disease has been eliminated, the only way to die is to be randomly killed ('gleaned') by professional reapers ('scythes'). Two teens must compete with each other to become a scythe--a position neither of them wants. The one who becomes a scythe must kill the one who doesn't"--