In 378 CE a general from Teotihuacan in the Valley of Mexico, led an invasion force into what is now Guatemala and seized the major city of Tikal. He killed the king and put the son of the Teotihuacan emperor on the throne. Several monuments at Tikal tell the story in the words of the contemporaries. There is no substitute for original documents when trying to understand the past. This book examines the actual texts of three key monuments at Tikal and the role of a queen to shed light on the events of 378. The illustrations are clear and the translations are glyph by glyph. The intention of this book is to put the data all in one place for scholars and researchers to use and interpret.