When 16-year-old Rachel’s father fails to return from a courier mission and is declared dead, she is made the ward of his 19-year-old apprentice, Logan, her unrequited first love. Rachel is certain her father is alive, but to leave the walled city-state of Baalboden and search for him she must agree to help Commander Chase, the violent despot who sent her father on his last journey. The commander desperately wants the package Rachel’s father was carrying, and he’s willing to exchange Logan’s life for it. Rachel swears to bring back the item, free Logan, and make the commander regret he ever knew her, but a rival power is also seeking the parcel, and the commander has some tricks up his sleeve. Alternating between Rachel and Logan’s perspectives, Redwine’s debut is a jumble of technology, fantasy, and post-apocalyptic adventure. Her characters are interesting, but so capable and polished that they lose realism and sympathy. The story offers solid writing, ample action, and a sweet romance, but also implausible science and an unexpectedly messy climax that leads into the next book. Ages 13–up. Agent: Holly Root, Waxman Literary Agency. (Sept.)