Known as the 'Merchant of Death,' the world's foremost arms dealer, Viktor Bout, was both Public Enemy number one to the global intelligence agencies and a ruthless criminal worth around six billion dollars. For years Bout had eluded capture; Bout appeared utterly untouchable. This is the incredible true story of Operation Relentless, the top-secret mission to entrap Viktor Bout - a story that ranges from the steamy jungles of Colombia to the ice-bound streets of Moscow.