Australian actress and inventor Hedy Lamarr was featured in NBC’s ‘Timeless.’ Best known in her time as the world’s “most beautiful woman alive,” Lamarr starred alongside Clark Gable and helped develop an early technique for early ideas behind WiFi.

Award-winning actor Burt Reynolds has starred in an array of screen projects over the decades, including 'Deliverance,' 'Smokey and the Bandit,' 'The Cannonball Run,' 'Evening Shade' and 'Boogie Nights.'

Marjory Stoneman Douglas was a journalist and environmentalist who helped defend the Florida Everglades.

Shirley Chisholm became the first African-American congresswoman in 1968. Four years later, she became the first major-party black candidate to make a bid for the U.S. presidency.

Harry T. Moore was an early civil rights leader and founder of the NAACP chapter in Brevard County, Florida. He was murdered, along with his activist wife, by a bomb planted in their house on Christmas Day in 1951.

Former political adviser Roger Ailes transformed the cable news landscape during his reign as chief of the Fox News Channel from 1996 to 2016.

Janet Reno broke new ground in 1993 as the first woman to serve as U.S. Attorney General, serving under President Bill Clinton.

African-American physicist and astronaut Ronald McNair was one of the seven crew members killed in the 1986 Space Shuttle 'Challenger' explosion.

Anthropologist and novelist Zora Neale Hurston was a fixture of the Harlem Renaissance before writing her masterwork, 'Their Eyes Were Watching God.'

Mary McLeod Bethune was an educator and activist, serving as president of the National Association of Colored Women and founding the National Council of Negro Women.

American serial killer and rapist Ted Bundy was one of the most notorious criminals of the late 20th century.

Jamaican singer, musician and songwriter Bob Marley served as a world ambassador for reggae music and sold more than 20 million records throughout his career.

In the new Biography documentary special, 'David Cassidy: The Last Session,' which airs Monday at 9/8c on A&E, Cassidy admitted to lying about having dementia to hide the fact that he had a drinking problem. The former teen idol died in November 2017 from organ failure. “I did this to myself,” he said.

A child from an Italian immigrant family, Al Capone, also known as "Scarface," rose to infamy as the leader of the Chicago Outfit, an organized crime syndicate during the Prohibition era.

Dave Thomas is best known for founding the Wendy's hamburger restaurant chain. He became the company's TV spokesman in 1989.

An abused child who later earned her living as a sex worker, Aileen Wuornos was found guilty of killing six men and was later executed in a Florida prison.

Anna Nicole Smith gained early fame as a model for Guess and 'Playboy' magazine, and later became known for her marriage to 89-year-old oil tycoon J. Howard Marshall II.

Ma Barker was the matriarch of the Barker-Karpis Gang, whose spree of kidnappings, murderers and bank robberies led to her and its members' violent deaths.

The assassination of designer Gianni Versace is the subject of season two of ‘American Crime Story,’ following season one on OJ Simpson. The FX TV show stretches back from Andrew Cunnan’s murder of Versaci to the men’s childhoods, suggesting homophobia hampered the investigation.

High school teacher Christa McAuliffe was the first American civilian selected to go into space. She died in the explosion of the space shuttle 'Challenger' in 1986.

Davy Jones was a singer and actor who found fame as a member of the pop group the Monkees, on the television show of the same name.

Jack Kerouac was an American writer best known for the novel On the Road, which became an American classic, pioneering the Beat Generation in the 1950s.

Baseball legend Joe DiMaggio set a record with his 56-game hitting streak in 1941 and won nine World Series titles during his 13 years with the New York Yankees.

Donna Summer was a singer-songwriter who became the "Queen of Disco" in the 1970s with such hits as "Love to Love You Baby," "I Feel Love" and "Last Dance."