An eventful and immersive interdimensional romp.-Kirkus Reviews A troubled home, a family secret, and a technological breakthrough turn a teen's world Slideways.Fifteen-year-old Ben believes his life is forever shattered after his brother's accident. His parents won't talk about it and he feels isolated and lonely. After Ben's grandfather disappears, Ben stumbles upon his grandfather's scientific discovery-a portal to a parallel universe and a world called Terra.As Ben searches for his grandfather, dueling security agencies from both worlds seek to confiscate the portal device and control the passage between worlds. The chase is on, but the danger mounts when new adversaries threaten Earth, Terra, and the very nature of the universe.Though ruthless enemies hunt him, he finds unexpected friends. Ben's choices matter and he must decide the fate of the multiverse in a stunning battle of wits, technology, and power.