Watch Full Series of An Unknown Enemy Online Full Episodes FREE in HD on 123movies. Download An Unknown Enemy Series 123movies new website. Fernando Barrientos, Head of the National Security Directorate, Mexico's Secret Police, is trying to reach the highest position in the country. On his way, he'll have to manipulate, betray, and kill, and he's well prepared for it. However, his path will be full of obstacles. Nobody, not even his family, will be immune to the chaos left in his quest for total power.