After New York's Bonanno mob family was nearly destroyed by an undercover FBI agent, Joseph "Big Joey" Massino brought them back to prominence and became the only major Mafia boss left on the streets...the "Last Don."

Gun-for-hire Joe "Mad Dog" Sullivan tries to hide his criminal activities from his family.

Joseph Valachi is the first syndicate member to testify against the Cosa Nostra and reveal its inner workings.

The story of Murder, Inc., a 1930s organized-crime group whose members were mob enforcers. Murder, Inc. was a ruthless gang that carried out an estimate 1,000 mob hits. founded by Meyer Lansky and Benjamin "Bugsy" Siegel, they were assassins that carried out contract killings for the Itailian American, Jewish American mafia, and others

Fashioning himself a modern-day Celtic warrior, 1970's Irish mobster Danny Greene clashed with the Cleveland mafia, resulting in a bombing war that would eventually destroy them both.

Gregory Scarpa lived a charmed triple life; mafia hit man, loving father and husband, and secret FBI informant.

One of the most violent and outrageous characters in mob history, "Mad Sam" DeStefano lived up to his moniker throughout a three-decade reign as a juice loan lender and sadistic enforcer with the notorious Chicago Outfit.

Jimmy Burke was one of the most prolific mob earners in New York history.

Philadelphia mob boss Nicodemo Scarfo, known as "Little Nicky." His paranoia, volatility and treachery ultimately lead to his demise.

Tommy Pitera became one of the most violent men of all time in the 1980's; betrayal brought the mob killer to justice.

A profile of Teamsters leader Jimmy Hoffa, who disappeared in 1975. Included: remarks by his daughter Barbara Crancer and biographer Arthur Sloane.

In this shocking episode of mobsters, we deal with the brutal drug trade which flourished during the 1950s and 1960s, typified by the violent yet hugely interesting figure of the 'Santo Traficante'; literally, the saintly or sacred drug dealer.

Las Vegas mobster Tony Spilotro is profiled. Tony Spilotro made his name in Chicago's most powerful organized crime family and was given control of the gang's casino interests in Las Vegas.

Frank Calabrese Jr., son of mobster Frank Calabrese, flipped against his father, and nearly brought down the vaunted Chicago Outfit.

A profile of Jack Ruby (1911-1967), the man who shot and killed Lee Harvey Oswald two days after the 1963 assassination of John F. Kennedy. Included: a discussion of his possible motives for the murder.

A profile of Frank Costello includes an interview with Anthony Quinn. Frank Costello sees himself as a businessman, preferring diplomacy to violence.

Vincent Gigante attempts to convince the world that he is legally insane.

As leader of Murder, Inc., Albert Anastasia was one of the most vicious and feared mob bosses of the twentieth century.

Heroin kingpin Frank Lucas dominated the Harlem drug market from 1968 to 1975, before being busted for conspiracy to distribute heroin and serving 5 year of his 70-year sentence.

In the 1980s, New York City cops Louis Eppolito and Stephen Caracappa were secretly working as hired guns for the Mafia in a scheme that would go down as the worst case of police corruption in NYPD history.

Fugitive James "Whitey" Bulger is profiled. He rose to become a gangster in South Boston, became an informant for the FBI to end the Italian mob in, distract them from his own criminal activities and ended in the largest informant scandal in FBI history.

Gaetano 'Tommy' Lucchese, a mob figure in 1930s New York, is profiled. He was one of the most successful and notorious members of the Italian-American Mafia. During Tommy's tenure as underboss and boss of what would come to be known as the Lucchese crime family, he pioneered and perfected labor rackets in New York City's kosher chicken industry, the garment district, and the world of professional boxing which generated millions of dollars.

Carmine Persico stands as one of most enduring Godfathers in mafia history.

Chicago mob boss Sam Giancana (1908-75) is profiled.

The Genovese crime family is the subject.