Deep in the Amazon lies the Vale do Javari – over thirty thousand square miles of towering trees that blot out the sun, mist-choked valleys, bottomless black lakes, rotting fungus, disease, and ancient legends of colossal beasts older than mankind itself.

Countless souls have entered seeking fortune. None have returned.

Now an artifact has surfaced—a mysterious dark stone etched with a map that points the way to that lost world and its hidden city. It also speaks of a treasure beyond price: the key to immortality.

The stone was stolen by a powerful Brazilian crime family, and its patriarch understands exactly what he holds. When the Brazilian government appeals for help, the United States answers by deploying the feared Reaper Special Forces team. Their orders are simple and absolute: stop the Molino family and deliver lethal justice.

But what the Reapers discover in this primordial wilderness are things from the dawn of time, alongside monstrous creatures that should exist only in nightmares. What began as a mission of retribution quickly becomes a desperate fight for survival in a primordial green hell.

In the tradition of Primordia and Mysterious Island, comes the LOST WORLD, the next blockbuster adventure series by Greig Beck.