Black rain : Covert government operative Danielle Laidlaw leads an expedition into the deepest reaches of the Amazon in search of a legendary Mayan city. Assisted by a renowned university professor and protected by a mercenary named Hawker, her team journeys into the tangled rain forest--unaware that they are replacements for a group that vanished weeks before, and that the treasure they are seeking is no mere artifact but a breakthrough discovery that could transform the world.

Black sun : In the heart of the Amazon, Danielle Laidlaw makes an incredible discovery: a translucent Mayan stone generating massive waves of energy while counting down toward the infamous apocalyptic date: December 21, 2012. And somewhere, there are three more just like it.