Donal MacIntyre travels to Cork, where increasing levels of heroin use are weakening the city's prevailing sense of community and fortitude against crime.

The investigative journalist explores the world of youth crime, examining its causes and the ripple effect on the wider community, as well as looking at what drives young people to choose a bad path. He meets those at he heart of the issue, including offenders, reformed criminals, the families and communities, and individuals making a difference.

The investigative journalist continues to explore the world of youth crime, as he visits Dublin's north inner-city. Here, he examines the causes and the ripple effect on the wider community, as well as looking at what drives young people to choose a bad path. He meets those at the heart of the issue, including offenders, reformed criminals, the families and communities, and individuals making a difference.

After nearly a decade of murders and gangland feuds, Limerick has an opportunity to break the cycle of crime and poverty in the city, but is it being seized?