In October, 2002, the ‘D.C. Snipers’ introduced a new kind of terror to the US. public. For three weeks, the killers shot people at random - ordinary citizens doing the most mundane things - shopping, pumping gas, waiting for a bus. John Muhammad, 42, was a deranged dad on a mission to get back his kids. Lee Boyd Malvo, 17, was a homeless juvenile desperate for a father – who John Muhammad methodically transformed into a boy soldier.

Billy Joe, Larry, Willie and Otis Chambers are some of the most notorious drug lords in America. This installment chronicles their high points and their fall in 1988 because Larry videotaped the drug deals, and the tapes were found.

In the 1970s, Charles “Chaz” Williams went well beyond traditional hustles by robbing over 60 banks in several states. Decades later, Chaz - or Slim as he is known on the streets - takes ‘American Gangster’ on a personal tour of his life’s journey, including how he continued his bank-robbing escapades after going to jail under the blanket protection of the prison work release program.

Frank Lucas is the subject of a blockbuster movie, also titled "American Gangster," starring Denzel Washington as Lucas and Russell Crowe as the detective and prosecutor Ritchie Roberts, who helped bring him to justice. In this episode of BET's "American Gangster," Lucas faces the camera himself and tells his story – with an assist from the real Ritchie Roberts.

Before there were Crips and Bloods, there were the Blackstone Rangers – and Jeff Fort was the group's leader. Starting as a small group of teens from the Woodlawn neighborhood of Chicago, the Rangers absorbed countless rival gangs based largely on Fort’s remarkable leadership and organizing abilities. In 1986, Fort was tried for promising to commit acts of domestic terrorism in return for money from Libyan dictator Moammar Khadafy. He was found guilty and sentenced to 80 years, which he’s currently serving in a maximum security federal prison.

This group of notorious homegrown bank robbers, from the troubled Bay Area suburb of Vallejo, robbed dozens of banks in that area in the mid-'90s.

Black Mafia was the most feared force in Philadelphia’s criminal Black underworld. One of the most ambitious criminal enterprises in the history of Black America, the group extorted, hustled, plundered and murdered with impunity. It also maneuvered skillfully through many worlds, shielding itself inside the Nation of Islam, conning politicians and other leaders, and devising multiple layers of protection and cover.

Before he was old enough to shave, “Little Melvin” Williams possessed a genius I.Q. and was a prodigy in the gambling haunts and alleyways along glittering Pennsylvania Avenue. His exploits helped inspire the hit series “The Wire.” On this episode of ‘American Gangster’ he tells his story, his way.

This installment shows what Queens, NY was really like when Nichols roamed the streets.

He was a Nobel Peace Prize nominee, he worked with troubled youth and he co-founded one of the most infamous gangs that continues to terrorize the Black community nationwide. His life is documented in this installment.