Louis meets the Phelps family — the people at the heart of the controversial Westboro Baptist Church. The Phelps have rabid anti-homosexual beliefs, and often campaign at the funerals of American soldiers. They believe that every tragedy in the world is God's punishment for homosexuality.

Faced with the challenging behaviour of their kids, more and more parents in America are turning to psychoactive medication to help them cope, even though the drugs, and sometimes the diagnoses, remain controversial. Louis travels to one of America's leading children's psychiatric treatment centres, in Pittsburgh, Pennsylvania, to get to know the diagnosed children and hoping to understand what drives parents to put their kids on drugs.

Louis has gained access to Coalinga Mental Hospital in California, which houses more than 500 of the most disturbed criminals in America, convicted paedophiles. Most have already served lengthy prison sentences, but have been deemed unsafe for release. Instead, they have been sent here for an indefinite time. Spending time with those undergoing treatment, Louis wrestles with whether he can ever allow himself to believe men whose whole history is defined by deception and deceit.

Join Louis Theroux as he investigates the affect crystal meth addiction is having on the local community of Fresno in California's Central Valley.

Louis Theroux spends time with a small and very committed subculture of ultra-nationalist Jewish settlers. He discovers a group of people who consider it their religious and political obligation to populate some of the most sensitive areas of the West Bank, especially those with a spiritual significance dating back to the Bible. Throughout his journey, Louis gets close to the people most involved with driving the extreme end of the Jewish settler movement - finding them warm, friendly, humorous, and deeply troubling.

Renowned documentarian Louis Theroux dived into the BBC Archives and selected his favourite documentaries. Each of them had an impact on Louis and explains why he chose the documentaries and how they have inspired his work.. Covering a range of styles - some vérité-driven, others told more through interview - but in all of them you see life at its most raw, its most strange and therefore its most human.

For two weeks, Theroux visits the San Quentin State Prison.

Louis goes to South Africa where American tourists pay to hunt wild animals in privately owned reserves.

Louis stays with the residents of a soon to open brothel in Nevada for a few weeks.

In 1997, Louis Theroux made a documentary about the world of male porn performers in Los Angeles. 15 years later, he returns to find a business struggling with the deluge of free porn on the internet. Louis revisits some of the original programme's contributors as well as meeting the latest crop of porn performers dreaming of porn stardom.