Even though Dana, Amy, and Jack have escaped from the Troll, they know they're still in danger. Something sinister is going on in the old mine and the kids are determined to find out what it is. Dana is sure she's identified the Troll, but Amy and Jack can't believe he's someone they've trusted all their lives. The deeper Dana digs for answers the more questions she finds. Desperate, Dana tries to find a solution on her own-but who will believe her?

About the Author

Mackenzie Reide is a mechanical engineer, adventurer, and writer. She also dabbles in aerospace, so yes, you can call her a rocket scientist. She has been entertaining kids with her stories since she was eight. She currently divides her time between Vancouver, BC, and New York City. For more information you can check out her website at www.mackenziereide.com.

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Better World Books (https://www.BetterWorldBooks.com) is a for-profit, socially conscious business and a global online bookseller that collects and sells new and used books online, matching each purchase with a book donation. Each sale generates funds for literacy and education initiatives in the U.S., the UK, and around the world. Since its launch in 2003, Better World Books has raised $33 million for libraries and literacy, donated over 32 million books, and reused or recycled more than 397 million books.

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