Now That You're Here (Duplexity, Part I)

In a parallel universe, the classic bad boy falls for the class science geek. "The perfect blend of sci-fi and swoons."—Amie Kaufman, New York Times bestselling author of These Broken Stars
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One minute Danny was running from the cops, and the next, he jolted awake in an unfamiliar body—his own, but different. Somehow, he’s crossed into a parallel universe. Now his friends are his enemies, his parents are long dead, and studious Eevee is not the mysterious femme fatale he once kissed back home. Then again, this Eevee—a girl who’d rather land an internship at NASA than a date to the prom—may be his only hope of getting home.
 
Eevee tells herself she’s only helping him in the name of quantum physics, but there’s something undeniably fascinating about this boy from another dimension . . . a boy who makes her question who she is, and who she might be in another place and time.
 
And don't miss Duplexity, Part II: While You Were Goneflips this story on its head and tells the tale of the alternate Danny and the alternate Eevee, living in Danny’s parallel world.

From the Hardcover edition.