Episode 1

Documentary examining the rise of free pornography since the mid-2000s, meeting viewers, stars and producers to ask what impact the increased accessibility is having on society. Cameras follow 19-year-old Gia and her room-mate Gianna, 21, who are both newcomers to the industry and are part of a generation of people that have grown up with porn at their fingertips - a reality at odds with their parents - which has led to problems for both young women. The programme also hears from British parents and their children, who are having frank, awkward and often funny discussions about their opinions and experiences of porn.

Episode 2

The second episode of the documentary examines whether pornography is changing people's behaviour, looking at the `gonzo' genre pioneered by John Stagliano's Evil Angel production company. It used to be niche, but today is among the dominant styles of porn. In the offices of Evil Angel, the programme meets photo editor Fallon, who's becoming increasingly disturbed by the extreme images she sees every day. Back in the UK, Rob speaks about how he became addicted to porn, and there are interviews with young men who watch pornography on a daily basis.

Episode 3

Cameras follow Jason, a 44-year-old former gardener who is now a full-time pornographer, travelling across the UK in search of women willing to be his co-stars. His brand of 'first-time porn" is making him money but he wants more, and believes that his friend Matt - a bus driver - presents a lucrative new opportunity. For advertising executive Cindy Gallop, the explosion in online pornography has had a tangible impact. She dates younger men and has witnessed first-hand how their approach to sex has changed.