Archeologist Lina Taylor teams up with former Immigration and Customs Enforcement agent Hunter Johnson to track down four ancient Mayan artifacts that have disappeared.

Having locked the Raven's gate, fourteen-year-old Matt travels to Peru where he meets the second of the five gatekeepers and works with him to try to stop the opening of a second gate somehow related to the Nazca Lines.

Recent stunning discoveries are exploding the myth of the Amazon as a primeval wilderness, revealing traces of ancient civilizations that flourished there for centuries. Dense settlements indicate populations in the millions, supported by sophisticated agricultural systems, while huge geometric earthworks and roadways bear witness to complex religious ideas and social networks.

Living in a village in Ecuador, a Quechua Indian girl is sent to work as an indentured servant for an upper class "mestizo" family.

Describes the history of the Inca civilization and the construction of the city of Machu Picchu in the Andes Mountains.

Investigating a series of savage murders that disrupt a massive new exhibition at the New York Museum of Natural History, graduate student Margo Green finds a clue in a failed Amazonian expedition.