Investigative journalist Donal MacIntyre uncovers crime-ridden and corrupt towns.

Donal MacIntyre travels to the city of Naples, which is also home to one of the richest and most dangerous criminal organizations in the world.

Donal MacIntyre goes to Mexico City, a destination riddled with gun violence and ruthless gangs of kidnappers.

Donal MacIntyre investigates how much crime in Cape Town affects those who live here.

Donal MacIntyre uncovers the Turkish city of Istanbul's role as part of the Balkan Route of the European heroin trade.