Felix
Felix asked Rebecca Cantrell:

I love your books with James Rollins! Was "The World Beneath" released as an hardcover or ARC? Also - I read a excerpt of your new book (sounds awesome!) Is there a tie - in with The doctor aboard the subway train & the "Hannah Vogel" novels? Stay Frosty, Felix

Rebecca Cantrell Hi! The World Beneath was released as a paperback, ebook, and audiobook.

Glad to hear that you like the new book!

I wasn't planning any tie in with the doctor and Hannah Vogel, but now that you mention it, that's a great idea!

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