The Mesa

Tall, long-living, and God-fearing human beings from another planet, Arturias, come to planet Earth on a humanitarian mission to bring gene-therapy medicines to the people there.  They come to Earth at the direction of their prophet and navigate there by charting the Christ Star that appears in the heavens, the appearance of which had been prophesied for some time.  Technologically advanced, they arrive in 1848 and must learn to assimilate into the American culture without being detected. This book is about what happens to them after their arrival.