National Geographic: Inside

Episode 2

Mystery of the Romanovs

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)

Episode 3

Vegas Mafia

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.

Episode 4

Bikers and Mobsters

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

Episode 5

L.A. Gang Wars

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.

Episode 6

The Prison Code

Episode 7

Inside Al Queda

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

Episode 8

American Skinheads

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.

Episode 9

Philly Mob

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.