Ross Kemp, best known for his role of Grant Mitchell in the show EastEnders, journeys into the underbelly of some of the world's most notorious gangs.
From South Africa to El Salvador, on the show Kemp travels around the world talking to gang members, locals who have been affected by gang violence, and the authorities who are attempting to combat the problem.
He meets brutal Yardie posses in Jamaica, spends time with violent football hooligans in Poland, uncovers new paramilitary gangs in Colombia and exposes the criminal groups in East Timor that have brought the country to the verge of collapse.
Ross goes beyond the gangster's local haunts and finds out what makes them tick.
