【圖書簡介】 He is quiet, invisible,deadly-abd the newest weapon on the front lines of a technologically advanced war. As part of a top-secret initiative called Third Echelon, National Security Agency special operative Sam Fisher has been Given license to spy, steal,aestroy, and assassinate to protect America.He works alone. And strikes fast.A one-man shadow warrior as cunning and ruthless as the enemies he hunts-but with one advantage...