The murder of a renowned expert in Mayan history lures Lara into the jungles surrounding Merida, Mexico. For in this lush paradise are the temples of the Mayan gods--and the camps of modern-day rebels fighting to save their Mayan heritage. As the body count escalates, Lara must uncover the secrets of the Mayan underworld known as Xibalba--and the journey into the very heart of darkness.