Did North Korea hack Sony Pictures? What's the bizarre theory behind Philip Seymour Hoffman's death? Who murdered the Black Dahlia? The series lifts the lid on Tinseltown's secrets.
Four headline-hitting disappearances come under the spotlight, including the mystery of Lord Lucan, the kidnapping of Charles Lindbergh Junior and the strange fate of Robert Maxwell.
From Robert Kennedy and Hugo Chavez to Jill Dando and Dr David Kelly, this episode explores the conspiracies that thrive when high-profile people die.
An investigation into the causes of conspiracy theories, the people who believe them, and how we separate fantasies from real threats.
America's Flying Saucer: From flying saucers to killer drones, discover the out-of-this-world technology the US military is using to conquer the globe. (S1, ep 22)
Global Depopulation: Many predict a cataclysmic event will soon spell the end of the human race. If disaster struck, is there a way we could save ourselves from extinction? (S1, ep 21)
Secret Government Warehouses: From Fort Knox to Hanger 18 and Camp Hero, discover the shocking truth hidden inside the government's secret and highly-fortified areas. (S1, ep 20)
Top Ten Secret Societies: Could elite groups of power players be plotting the fate of the world? Discover the plans and goals of the world's most secretive organisations. (S1, ep 19)
Secret Alien Attack: Are governments secretly preparing for an alien attack? From death stars to satellites, experts explore the likelihood of an extra-terrestrial strike. (S1, ep 18)
Nazis Today: Many believe Hitler and key members of his inner circle survived the fall of Berlin. If so, where did they go? And did they flee with plans for revenge? (S1, ep 17)