S.T. Boston 
Watchers [EPUB ebook] 

Three prominent world figureheads disappear following The World Summit in Kuala Lumpur. The following day, U.S. President John Remy is found dead in his hotel room.
Meanwhile, two friends on a road trip across North America come to the aid of a mysterious woman, washed up on the banks of the Colorado River. Somehow, all these events are linked.
Choosing to help her plunges them into a nightmarish race across the globe, for she holds a secret that defies all we know about human evolution. Pursued by a deadly force, they must recover a relic so ancient it’s fallen into legend.
A relic that will not only save them, but all of humanity.