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For eighteen years, Redwing has lived in hiding in a city of hissing pipes and curving temples perched on the side of Mol, the great volcano. Her father hoped she would grow up to be a real human girl and not a wicked creature out of mythology, so he secretly spared her life as an infant.

But when two priests track her down and attack, she calls forth fire to protect herself, and her secret is out. Redwing soon catches the attention of a cult with a thousand-year-old grudge, a group of underground rebels, and the son of the Empress. And when Redwing’s sister goes missing, she uncovers a greater plot to awaken Mol and bring his lava down upon them all.

Now, Redwing must draw a line between myth and history -- and prove she is more than a monster -- if she is to save both her sister and her home.


"Rule uses sharp, lyrical prose to describe a culture with its own gods and monsters, mixing ancient worlds and new technology... a funny, exciting adventure for readers ready to move on from doe-eyed heroines swooning over rugged heroes."
- Kirkus Reviews
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Behind the Book

The seed of this book was an article on NPR about the book Wicked Plants by Amy Stewart. I wanted to write *something* that involved a poison garden, so that's where The Hidden Twin began. In the final book, the poison(ish) garden has only a small (but vital!) role in the plot.

You can't tell a lot about this book from the cover. It's a bit steampunky! Lots of ancient gods! A bit of romance! A bit of violence! Someone once told me that I was "ruining the young people" with this book, so I guess there's that, too.

Have you been ruined by this book? Tell me how it went!

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