Trapped behind enemy lines. No back-up, no support. Only one chance. Inside North Korea, veteran Fourth Echelon agent Sam Fisher finds himself on the run when a top-secret covert mission goes fatally wrong. Betrayed by his allies, hunted by his adversaries, and disavowed by his own agency, Sam is stranded deep inside hostile territory. His only chance of survival is to uncover a murderous plot that reaches into the heart of the hermit state, and beyond. Meanwhile, Fisher's estranged daughter Sarah risks everything to assemble an offthe-books effort to find her missing father before his luck runs out-but the conspiracy that framed Sam goes deeper than either of them realize …