Sisimito II - Xibalba by Henry W. Anderson

Molly Cervantez and Sergeant Eutimio (Stephen) Chiac are once again hurled into the dangerous and mysterious world of Sisimito (Mahanamatz), the Cockscomb Basin, and the Maya Mountains, Belize. As Eutimio tries to rescue Molly from the dreaded Sisimito, he enters the darkness and evil wonder of the Maya Underworld and has to use the wit and cunning of the Hero Twins, the gods Hunahpu and Xbalanque, if he is to escape the City of Xibalba and the Death Gods, and continue his mission to save his future wife, Molly