La tredicesima mummia

The expedition led by Professor Nizon reaches the Mexican border and excavates the legendary Tiger Temple, but they disappear almost immediately! Tex and Carson have the task of finding out what happened. They go to Huerta, but here the plot thickens: all the "americanos" have been killed and their dead bodies, hit by a Yaqui arrow, have a gruesome message on them, written in ancient Aztec... the “Sons of the Sun” are back!