Sometimes the Most Priceless Treasure is Life Two members of an international archeological team have been murdered, and a third is missing. Summoned to the researchers’ site in Guadalajara, Mexico, Alton and Mallory must race the clock to uncover the sinister plans surrounding the site and protect the researchers from further attack. Along the way, they discover that the dig site’s ancient Aztec ruins aren’t the only source of mystery and surprise.