The last of Louis Theroux three part LA documentary series sees the journalist meet some of the city's paroled sex offenders. Never a man to avoid a tricky subject matter is he? California has some of the toughest regulations controlling sex offenders anywhere in America - after leaving prison they can spend years on parole being tagged and tracked and a lifetime on an online register. Theroux visits hostels to talk to parolees as well as the people charged with monitoring them, and asks whether the restrictions keep society safer and when, if ever, it is right to give sex offenders a second chance.