Kingpin

There is one thing every crime syndicate has in common: a boss. A don. A Kingpin. Structure and hierarchy are the foundations of organised crime. But no regime lasts forever. And behind every Kingpin, there is a legion of ruthless lieutenants, soldiers and rivals dying to take his place. Sometimes, they wait for the boss to retire or die of natural causes - and clash among themselves. More often, bullets fly and coups are staged. Power grabs and civil war are a matter of course in the criminal underworld. And when the dust settles, you never know who will be sitting on the throne. (History Channel)