Donal MacIntyre: World's Toughest Towns

Prague is an elegant and cultured city, but it’s also a place where sex is for sale, and women here are forced to work as prostitutes by traffickers.

Donal is in Paris, a city on the edge, where conflict can occur without warning and violent crime is nearly three times the national average.

Odessa is a friendly town with a thriving nightlife that celebrates diversity. But beneath the surface, there's a culture of fear and intimidation.

Donal is in Dublin, a town gripped by a local gang war, where a billion-year-old drug trade is fueling the rivalry and the authorities are unable to cope.

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

A city with one of the highest murder rates in the U.S., a place where life expectancy for some young men is as low as 19. Donal MacIntyre goes to Washington D.C.

In this episode, Donal MacIntyre goes to Mexico City, a destination riddled with gun violence and ruthless kidnapping gangs.

Donal MacIntyre takes viewers to the dark side of the beautiful city of Naples, which is also home to one of the richest and most dangerous criminal organizations in the world.

World famous for being a party town, Donal MacIntyre goes beyond the glitz and the glamour to uncover reports of a notorious underworld in Miami.