Two kids named Amy and Dan go to Russia, the home base of one of their family branch, THE LUCIANS. On the way for looking for clues they meet up with some competition.
They try to stop them from getting ahead. With no help for figuring out a clue, a Lucian helps them find it, but she is double crosses her own family branch and her best friend
wants to kill Amy and Dan.
Find out who she is and read the book!!!!