In the basement vaults lie more than $8 billion worth of rough, uncut diamonds. Above, the most advanced security system in all of Europe. Yet somehow two men manage to break into the London headquarters of Delacroix - the most powerful diamond company the world has ever known - without being seen.Only one of them leaves. The other is found lying dead in a pool of blood, the sole clue to his identity a piece of paper with the words "REMEMBER GABORONE".The...