Watch Series: Secrets Unlocked Released in (2020) - Season 1 The TV Series categorized in Documentary, and content rating 22min with duration 22 min broadcasted as these networks Smithsonian Channel, Streamed at Putlocker Join host Adam Mastrelli as he brings us face-to-face with the puzzling treasures of remarkable relics that are full of secrets, written in stone, gold, and blood. Explore hidden corners of the world, decipher ancient documents, and apply groundbreaking research and forensic techniques in our quest to discover the truth about these fabled cities, monuments, and remnants. - Season 1