A specialist police officer from a covert unit goes undercover online in a race against time to catch a man in the UK posing a sexual threat to children. He also also explores how many offenders now engage with victims online with little regulation.

An officer from a covert unit goes undercover online, disguised as a 13-year-old girl, in a bid to catch a man intent on sexually abusing several children. This is a pattern which mirrors the online reality for many girls.

An officer poses as `Oli', a 14-year-old exploring his sexuality on social media, as the undercover police team race to identify men seeking to sexually abuse a minor.