The third and penultimate book in the New York Times bestselling Moonfall series from thriller-master James Rollins, A Dragon of Black Glass is a tale of relentless adventure and the struggle for survival in a harsh world that hangs by a thread.

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What will they risk to save the world?

With the apocalyptic threat of moonfall looming ever closer, Nyx and her allies must venture into the eternally sunblasted lands to search for an ancient weapon buried untold millennia ago. All the while, enemies close upon her flanks, and a greater danger lurks ahead. For beneath a desert turned to glass, hidden from the scorching heat, life thrives—both wondrous and monstrous. But a more fearsome menace lies even deeper, where an ancient army has been seeded to protect a secret from any who dare seek it out.

Yet, can Nyx truly trust those at her side? Or even herself? For while her gifts grow ever stronger, so does the danger of losing herself to a dark madness. Worst yet, the same afflicts Bashaliia, her winged and bonded brother.

Elsewhere, a looming war explodes across the Crown, forging new alliances and greater enmities, as lands around the globe are drawn into fiery conflict. Prince Kanthe—now consort to the newly crowned Empress of the Southern Klashe—recognizes a hard truth: to save the world, he must destroy all that he once loved.

Beyond such struggles, a new cunning peril smolders at the heart of a kingdom. Hidden in the Shrivenkeep of the Iflelen, an ancient bronze weapon has been awoken. Fed by blood, fueled by hatred, it has only one purpose: to end all life on Urth.

But in this goal, will Nyx prove to be its ally or foe?

The Moonfall Series:

The Starless Crown
The Cradle of Ice

A Dragon of Black Glass

Book Four