Deadly Cults: A look at the strange allure of cults, their leaders and how they control their members. A Jonestown survivor remembers the last days of the Peoples Temple. (S2, ep 6)
Presidential Transports: A look behind the bulletproof glass and armoured plating of the president's fleet of vehicles, from Air Force One to the limo known as The Beast. (S1, ep 6)
America's Secret Armies: A look inside the US's secret services. These forces operate in the shadows, but what do they do? And do they have the US's best interests at heart? (S3, ep 5)
The Mafia: According to the FBI, the American Mafia still has approximately 3,000 active members. Could the Mafia's influence extend beyond local police and politicians? (S2, ep 5)
The Playboy Mansion: Peek inside the Playboy Mansion and uncover the truth about its decadent parties. Who is its most notorious guest? And how hard is it to get an invite? (S1, ep 5)
The Gold Conspiracy: Experts investigate the secret methods used to control the value of gold and why the US government could be overstating how much of it the country owns. (S3, ep 4)
Serial Killers: Experts investigate the motives of notorious American murderers as they question how the US has produced a staggering 1,400 serial killers since the 1970s. (S2, ep 4)
Area 51: Unlock the secrets of one of the most covert military bases on American soil. What actually goes on at Area 51? And what is its link to the Roswell event of 1947? (S1, ep 4)
American Terrorists: A look at the secret measures employed by US authorities to hold back the thousands of terrorists thought to be operating on American soil. (S3, ep 3)
Pegasus On A Pedestal: A 1940s Mobil Pegasus sign presents the crew with a big challenge. Plus, the team meet a self-proclaimed picking nerd who is desperate for a job. (S6, ep 2)