Violet City (Paperback) (ISBN-13: 9781733682008)

In the chaos of an alien invasion, Penelope Simmons wants one thing: to get to her mom before the world ends.

But after stumbling upon an unearthly chemical weapon, and being hunted down by a tenacious and surprisingly human-looking Volkranian, Pen becomes entangled in an uprising of intergalactic proportions.

To stay alive, Pen and her alien captor will have to trust each other. To save the world, they'll have to decide which species-human or Volkranian-is worth dying for.