NEW YORK TIMES BESTSELLER • In this ambitious and explosive thriller from the bestselling author of The Templar Legacy, one man must embark on a globe-spanning quest to save his son—and the world.

The Library of Alexandria was the most ambitious and important collection of ancient knowledge ever assembled. The building stood for 600 years and at its high point contained more than 500,000 manuscripts.

Fifteen hundred years ago, it vanished. No archaeological trace of the main library has ever been unearthed.

Now, Cotton Malone's ex-wife appears at his doorstep, panicked: their son has been kidnapped. Minutes later, Malone's bookshop is attacked—all because he's the only man alive who knows the whereabouts of the Alexandria link, the conduit for locating the missing library.

But finding that lost cache of knowledge, truths hidden away for a millenium and a half, will have grave consequences—both for Malone and for the balance of world power.