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Proving Grounds

Underworld #4

Proving Grounds

Apollos Thorne

10 / 10
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Publication
February 3, 2020

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About the Book

Book 4 of the Underworld series!

The minotaurs are dead. Mistress Nava is coming.

Join Elorion as he searches for the power to face the impossible. But where should he look? Will he be able to save his friends, Aeris and himself?

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Underworld

The series

Full series details →
#1Level Up or Die! #2Through the Belly of the Beast #3Sanctuary #4Proving Grounds #5Vampire Gate #6Scorching Sun #7Sanctuary 2.0 #8The Succubi #9 · Coming 2027Underworld Book 9
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Meet the author

Apollos Thorne

Apollos Thorne’s stories are more than just tales of adventure—they are immersive worlds, carefully crafted with each character’s growth and resilience at the heart of the plot. With a passion for blending elements of fantasy, science fiction, and LitRPG, Thorne has built a dedicated fanbase with his unique approach…

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