Inside

Maverick researcher Shaun Ellis raises abandoned wolf cubs and teaches them, by example, how to survive in the wild -- living and behaving like them, howling, licking and snarling like them, even eating carcass meat like them.

When Russia's last tsar, Nicholas II, and his family disappeared 90 years ago, eyewitness accounts said the family was brutally murdered. What really happened to them? AKA: Romanovs: The Missing Bodies (UK)

In the 1950s, Mafia-built Las Vegas became a cash cow for organized crime, but when the richest man in the world arrived, things changed and the feds blew the lid on the original Gangster's Paradise.

Old-world traditions of the Mafia clash with the new ways of biker gangs when the two groups join forces to take control of Montreal's drug trade. Crime reporters, undercover cops and former mafia members shed light on the underbelly of this crime world

For gang members in South Central Los Angeles, the "hood" is a brutal war zone, where streets and reputations are vehemently defended, often to the death. NGC goes into this violent world for four months -- a period in which more than 60 L.A. residents are killed or wounded in gang shootings. Watch an emotional funeral, see 11-year-olds brandishing their weapons, and hear the stories of those entangled in this chilling cycle of bloodshed.

See how this Islamic terrorist network continues to morph, selects and trains militants to blend into Western society, and inspires a global jihadist movement. Meet men who know and have fought with Osama bin Laden and find out why he's still at large

From secret codes on the Internet to violent lyrics in head-banger metal music, this burgeoning white power movement is finding new ways to spread its message of racial pride and separation.

After the godfather of the Philadelphia mob was assassinated, wise guys battled for the top position -- and the Mafia's code of silence began to crumble. Mafia soldier Nick 'The Crow' Caramandi and hit man Ron Previte describe gangster life in transition.

Just who are the Hells Angels - a club of rebel bikers or a gang of crooks? In 2002 the Federal Government launches Operation Black Biscuit, which is meant to answer this question once and for all.

The Mongols are a bunch of small time punks who fight a war against the Hells Angels and become heavyweight thugs - dealing drugs, buying guns and assaulting anyone who crosses them. Eventually the federal authorities are concerned enough to send one of their agents into the heart of the club – an undercover biker.