1. James "Whitey" Bulger
   Charles Manson
2. Richard McCoy Jr.
   John Dillinger

Charles Manson was a rejected musician who became a cult​ leader of a group known as the Manson Family. After organizing several murders throughout California, Manson was arrested and charged in 1971, spending the rest of his life in prison where he died at the age of 83.

1. Eric Harris
   T.J. Solomon
2. Bryan Oliver
   Seung Hui Cho

Eric Harris and his friend, Dylan Klebold, entered their high school on April 20, 1999, killing twelve students and one teacher in a rage-filled shooting. The kids claimed the attack was due to prior bullying.

1. Al Capone
   Charles "Pretty Boy" Floyd
2. George "Baby Face" Nelson
   John Dillinger

John Dillinger was killed by Federal agents in the summer of 1934 when he was leaving a movie at the Biograph Theater in Chicago. Dillinger tried to flee as the agents approached him, and they shot him as he ran.

1. Darlie Routier
   Betty Lou Beets
2. Jodi Arias
   Stacey Castor

Prior to her trial, Jodi Arias gave several different statements to police, which mostly contradicted each other. When her stories failed to line up, she tried to plead self-defense but was found guilty of first-degree murder.

1. Patrick Kearney
   Dean Corll
2. Paul John Knowles
   Randy Kraft

Paul John Knowles traveled around the United States in the 1970s killing upwards of 20 people. When he was finally arrested and being transported by police, he tried to escape the police cruiser and was shot to death, ending his reign of terror.

1. Donald Harvey
   Charles Cullen
2. Donald Henry Gaskins
   Randy Kraft

Donald Harvey called himself the "Angel of Death," as he supposedly helped dozens of elderly people reach the afterlife. However, the jury didn't see it that way, and Harvey was sentenced to 28 consecutive life sentences.

1. Robert Ford
   Jesse James
2. Frank James
   James "Wild Bill" Hickok

Jesse James was the leader of the James-Younger Gang who robbed banks throughout the mid-west from around 1868 until the 1880s. In 1882, James was shot by Robert Ford: a new member of his very own gang.

1. Gary Ridgway
   Edmund Kemper
2. Richard Ramirez
   Dennis Rader

Known as the "BTK Strangler," Dennis Rader had a method of murder where he would bind, torture, then kill his victims. Despite moving away from his murdering ways after 1991, he was discovered after sending letters taunting police in 2004 and 2005.

1. Bonnie Parker
   Susan Polk
2. Theresa Knorr
   Sheila LaBarre

Bonnie and Clyde have moved beyond being simple American criminals as they now hold a place in American folklore. There have been several movies and books detailing their journey as star-crossed lovers.

1. Kevin Weeks
   James "Whitey" Bulger
2. Stephen Flemmi
   John Gotti

"Whitey" Bulger fled police in 1994 remained in hiding for nearly two decades, until 2011. He was finally discovered after a domestic dispute led police to his apartment in California.

1. Lee Harvey Oswald
   James Earl Ray
2. Leon Czolgosz
   John Wilkes Booth

Abraham Lincoln led the country through the most brutal war in its history, the American Civil War, only to be assassinated near the war's end at Ford's Theatre by John Wilkes Booth. Booth was an actor, which gave him access to the president that night.

1. Scott Rothstein
   Allen Stanford
2. Tom Petters
   Marc Dreier

Former CEO of Petters Group Worldwide, Tom Petters committed major business fraud during his time with the company. His main method of fraud was the Ponzi scheme where he used money from new investors to pay off old investors.

1. Alton Wayne Roberts
   Samuel Bowers
2. Cecil Price
   Edgar Ray Killen

Edgar Ray Killen was a high-ranking KKK member in Mississippi when he organized the murders of James Chaney, Andrew Goodman, and Michael Schwerner in 1964. However, he wouldn't actually be convicted of the murders until 2005.

1. Dzhokhar Tsarnaev
   Ted Kaczynski
2. Timothy McVeigh
   Terry Nichols

Ted Kaczynski is best known as the "Unabomber," a name he got for sending bombs to university and airport personnel. Kaczynski believed his actions were justified as the world desperately needed to slow down the progress of industrialization.

1. Benjamin "Bugsy" Siegel
   Meyer Lansky
2. Frank Costello
   Charles "Lucky" Luciano

"Bugsy" Siegel was instrumental in turning Las Vegas, particularly the Strip, into what it is today. However, major financial losses after he opened the Flamingo Hotel caused his bosses to turn on him before he had the chance to turn a profit.

1. John Wayne Gacy
   Ted Bundy
2. H.H. Holmes
   Ed Gein

Though it's been said he killed upwards of 200 people, only nine of H.H. Holmes murders have been confirmed. He was executed by hanging in 1896.

1. John "Doc" Holliday
   Billy the Kid
2. Butch Cassidy
   Johnny Ringo

Billy the Kid's fame grew substantially after he took part in the Lincoln County War. He killed several people during the war and was forced to spend the remainder​ of his short life as a fugitive.

1. Ed Gein
   Richard Ramirez
2. Albert Fish
   Jeffrey Dahmer

Known as the "Milwaukee Cannibal," Jeffrey Dahmer committed heinous acts against his victims which included necrophilia and cannibalism. He was also known for keeping his victim's body parts as souvenirs.

1. Timothy McVeigh
   Terry Nichols
2. David Koresh
   Dzhokhar Tsarnaev

Timothy McVeigh was the domestic terrorist responsible for the Oklahoma City bombing. The bombing occurred at the Alfred P. Murrah Federal Building in 1995, killing 168 people.

1. Carlton Gary
   Paul Durousseau
2. Henry Louis Wallace
   Chester Turner

Henry Louis Wallace was given the death penalty after being convicted of rape and murder. Despite several failed attempts to have his sentence overturned, Wallace awaits execution on death row.

1. Alton Coleman
   Colin Ferguson
2. Derrick Todd Lee
   Benjamin Atkins

After Colin Ferguson made the decision to represent himself in court, his trial became highly publicized. A debate over Ferguson's mental capacity ensued, but a psychiatrist determined he was sane enough to stand trial.

1. Frank Costello
   Meyer Lansky
2. Al Capone
   Charles "Lucky" Luciano

Aside from the National Crime Syndicate, "Lucky" Luciano also founded the Commission, which replaced the title of "Boss of Bosses." The Commission united the Five Families of organized crime in New York and helped alleviate​ some of the bloodshed in the city.

1. Bruno Hauptmann
   Wayne Williams
2. Edmund Kemper
   Henry Lee Lucas

Bruno Hauptmann's kidnapping and murder of Charles Lindbergh's son became a national affair since Lindbergh won the Orteig Prize for being the first person to fly non-stop from New York to Paris. The murder became known as "The Crime of the Century."

1. Alvin "Creepy" Karpis
   Frank Nitti
2. Charles "Pretty Boy" Floyd
   Dutch Schultz

"Pretty Boy" Floyd's crimes are considered a product of the Great Depression. With no money and little food, he and other men turned to robbing banks in the 1930s. Much of their early success was due to having weapons, such as the Tommy submachine gun, that officers didn't have at the time.

1. Bernard Madoff
   Charles Ponzi
2. Jim Bakker
   Frank Abagnale

Jim Bakker rose to fame as a televangelist host on "The PTL Club." He returned to televangelism on "The Jim Bakker Show" after his release from prison.

1. Lizzie Borden
   Mary Surratt
2. Aileen Wuornos
   Nannie Doss

Mary Surratt owned a boarding house in Washington D.C. that was frequented by John Wilkes Booth before he murdered President Abraham Lincoln. She was accused of conspiring with Booth and others after the assassination and was hanged for her part in the crime.

1. John Allen Muhammad
   Lee Boyd Malvo
2. Kenneth Biros
   Eric Wrinkles

According to his adolescent partner, John Allen Muhammad wanted to organize a group of fighters that he would train to carry out attacks under his orders. He intended to accomplish this by recruiting young boys from orphanages on his way to Canada.

1. Johnny Ringo
   Ike Clanton
2. Billy Clanton
   "Curly" Bill Brocius

"Curly" Bill Brocius was one of the assassins responsible for the death of Morgan Earp, the brother of Wyatt Earp. Seeking retribution, Wyatt hunted Brocius down, eventually finding and killing him in 1882.

1. David Berkowitz
   Edmund Kemper
2. Gary Ridgway
   Ed Gein

David Berkowitz committed murders across New York City from 1976 through 1977. As his confidence grew, he left letters to police to mock them for their efforts in catching him.

1. Frank Nitti
   George "Bugs" Moran
2. Alvin "Creepy" Karpis
   George "Machine Gun Kelly" Barnes

"Machine Gun Kelly" got his nickname from his weapon of choice, the Thompson submachine gun. He reached a high level of notoriety across the United States after kidnapping Charles Urschel, an elite entrepreneur​ in the country.

1. Gary Ridgway
   Bobby Joe Long
2. Erik Menendez
   Robert Berdella

A wealthy family from Beverly Hills, California, the deaths of Jose and Mary Menendez surprised the nation. Even more surprising was the reactions from their two children, Lyle and Erik, who went on a spending spree after their murders.

1. Christopher Wilder
   Lee Harvey Oswald
2. Herbert Mullin
   Carlton Gary

John F. Kennedy was still in his first term as president when he was assassinated on November 22, 1963. Lee Harvey Oswald has been connected to various conspiracies since the assassination, but none of them have stuck.

1. Henry Lee Lucas
   Albert DeSalvo
2. Christopher Wilder
   Joel Rifkin

"The Boston Strangler" killed thirteen women in Boston between 1962 and 1964. Even though Albert DeSalvo confessed to all of the murders, only one of them has been connected to him through DNA.

1. Andrea Yates
   Theresa Knorr
2. Darlie Routier
   Beverley Allitt

By the time Andrea Yates had her fourth child, she was showing signs of severe depression, even attempting suicide several times. Despite doctors telling her to avoid having further children, she had a fifth child which caused her condition to worsen.

1. Gary Ridgway
   Bobby Joe Long
2. Patrick Kearney
   Richard Ramirez

Richard Ramirez died at the Marin General Hospital in 2013 from complications due to a history of B-cell lymphoma. He had been awaiting execution on death row since 1989.

1. Carlo Gambino
   Paul Castellano
2. John Gotti
   Aniello Dellacroce

John Gotti gained significant power in the crime world after murdering Paul Castellano in 1985. Gotti took control of the Gambino crime family after the murder, though instability within the family grew under his rule.

1. Robert Hanssen
   Aaron Burr
2. Aldrich Ames
   Benedict Arnold

Benedict Arnold was an American military officer in the Continental Army before he saw the opportunity to switch sides. The commander at West Point, Arnold intended to give the fortification away to the British, but his plot was discovered, and he was forced to flee.

1. Dorothea Puente
   Aileen Wuornos
2. Bertha Gifford
   Judy Buenoano

The movie "Monster" starring Charlize Theron depicted the life of Aileen Wuornos. The movie won several awards, including Best Actress for Charlize Theron.

1. Edmund Kemper
   Albert Fish
2. John Wayne Gacy
   Gary Ridgway

John Wayne Gacy, known as "The Killer Clown," dressed up regularly as a clown at fundraiser events around his community. He would often call himself either "Pogo the Clown" or "Patches the Clown" as he claimed he tried to escape adulthood.

1. Al Capone
   Frank Nitti
2. Johnny Torrio
   Meyer Lansky

Al Capone is most known for his bootlegging operation in Chicago during Prohibition in the 1920s and early '30s. However, his violent ways eventually brought attention to his operations as Capone became known as "Public Enemy No. 1."