[Published in hardback as THE DEVIL'S ELIXIR.] 'I'm in trouble. Something terrible has happened ...I didn't know who else to call' An unexpected phone call from three thousand miles away. A voice he hadn't heard in more than five years. A desperate cry for help that he couldn't ignore. And two small words that would change everything about his life. FBI agent Sean Reilly and archaeologist Tess Chaykin are back in another edge-of-your-seat thriller that reaches from the present day back to 1700s Mexico and, quite possibly, far beyond...