A plane carrying an American arms inspection team mysteriously falls out of the sky. A senior U.S. diplomat is daringly assassinated. These are but warning shots to the most devastating terrorist conspiracy ever, conceived and paid for by a cunning Saudi prince who is one of the world's richest men. Burning across Russia, Europe, then home to America itself, the plot threatens to ignite in a single, apocalyptic millisecond. Only two operatives have a prayer of stopping it - Army Colonel Peter Thorn and FBI Special Agent Helen Gray, themselves on the run from the very people they're fighting to protect.