The Real Story of Chappaquiddick: Revisiting the Shocking Kennedy Scandal That Left One Woman Dead

55 years ago, Ted Kennedy was enmeshed in a fatal car accident that would haunt him until his death

Ted Dully/The Boston Globe via Getty Sen. Ted Kennedy (center) leaves the courthouse after pleading guilty in the deadly Chappaquiddick crash

Every July, the anniversary of the tragic 1969 Chappaquiddick incident reminds the world of late senator Ted Kennedy's most damaging scandal. Over the years, PEOPLE has investigated the mysterious car accident that killed a promising young political aide — even launching an entire podcast dedicated to sorting out the facts — yet many questions remain unanswered about what exactly happened. 55 years later, we revisit the details of the case.

On July 18, 1969, Ted's black Oldsmobile crashed off a small bridge on the tiny Massachusetts island of Chappaquiddick and landed in the water. The next morning, the body of Mary Jo Kopechne — a young woman who had worked for Ted's late brother, Robert F. Kennedy — was found inside the mostly-submerged car.

Ted and Kopechne had attended a party with friends earlier that night at a rented cottage on the island, a small stretch of land that is part of the better-known island of Martha's Vineyard, a popular vacation destination for old-money families. Reportedly only 12 people were at the gathering: Ted, five other married men and six so-called "Boiler Room Girls," the name given to a clutch of young unmarried female campaign strategists, including Kopechne, who had worked on Robert's presidential campaign before he was assassinated in 1968.

Bettmann/Getty Images From left: Ted Kennedy, John F. Kennedy and Robert F. Kennedy at Stork Club in N.Y.C. circa 1956

Whether because of the enormity of the tragedy or the unanswered questions, the scandal haunted Ted's political career and is believed to have sunk his presidential campaign some 10 years later, when he unsuccessfully challenged then-President Jimmy Carter for the 1980 Democratic nomination.

Marking its 55th anniversary on July 18, here are the facts you need to know about the infamous scandal.

Ted claimed he tried to rescue Kopechne, despite waiting 10 hours to notify the police

Ted said that he was giving Kopechne a ride back to the ferry so she could return to her hotel when he took a wrong turn and headed toward the Dike Bridge. The car crashed and they went over the bridge, falling into the water below.

Bettmann/Getty Images Boston criminal lawyer F. Lee Bailey (right) views the scene at the Dike Bridge in Edgartown, Mass.

Ted managed to escape the submerged car, and he later said that he dove down multiple times to try to rescue Kopechne before giving up. He said he made his way back to the party and then returned to the car with a cousin and a friend who also tried to rescue Kopechne but were not successful. They did not notify the police about the incident until approximately 10 hours after the crash.

During a nationally broadcast prepared statement he made on July 25, 1969, Ted claimed he didn't call the cops because he was confused and still in shock. "I was overcome, I'm frank to say, by a jumble of emotions: grief, fear, doubt, exhaustion, panic, confusion and shock," he said.

Ted's family — and lawyers — were called before contacting the police

Ted did not call the police in the immediate hours after the incident, but other calls were made that night.

Numerous calls charged to Ted's credit cards were placed from phones at the rented cottage and at his hotel to Ted's staff, friends, family, advisors and lawyers, according to The New York Times. In the hours that followed the crash, a group of these people gathered at the Kennedy family's Hyannis Port compound on Cape Cod, presumably to figure out how to salvage Ted's political career.

Related: The Surprising Phone Call Ted Kennedy Made to His Mistress After a Woman Died in His Car in Chappaquiddick

Ron Galella/WireImage Ted Kennedy announces his candidacy for president at Faneuil Hall in Boston in November 1979

The deputy sheriff spotted Ted's car 90 minutes after the claimed accident time

On July 19, 1969, Deputy Sheriff Christopher S. "Huck" Look Jr. was heading home in Chappaquiddick when he noticed a dark car that seemed "unsure or lost" at approximately 12:45 a.m.

When Look exited his vehicle to offer assistance, the driver sped off down Dike Road toward the bridge.

Upon arriving at the scene of the accident on Dike Bridge the next morning, the sheriff realized Ted's car was the one he saw earlier that night. However, the 90-minute discrepancy between Ted's reported accident time of 11:15 p.m. and Look's sighting at 12:45 a.m. was never fully solved.

No autopsy was ever performed on Kopechne's body

By the time local officials requested that an autopsy be done on Kopechne's body, it had already been flown off to a funeral home in Pennsylvania, where she was to be buried.

The district attorney in Massachusetts later petitioned a court in Pennsylvania to have Kopechne's body exhumed so that an autopsy could be performed. Despite a Martha's Vineyard associate medical examiner's determination that Kopechne had drowned, many remained skeptical, and some — including the diver who pulled her from the car — argued Kopechne suffocated after oxygen ran out of an air pocket she was breathing in while in the car.

Getty Images Mary Jo Kopechne poses for a portrait circa 1962

"I know she suffocated when her oxygen ran out," the diver, John Farrar, said in Senatorial Privilege: The Chappaquiddick Cover-Up, a 1988 book about the incident by Leo Damore. "She didn't drown."

Farrar claimed that Kopechne could have been alive for some time after the accident and alleges that she could have been saved if Ted had summoned the police earlier. "She could have lived a good while after the car went off the bridge," Farrar said in Senatorial Privilege.

The district attorney's request for a belated autopsy was opposed by Ted's camp and by Kopechne's parents at the time. It was rejected by a Pennsylvania judge following a hearing.

Ted was only charged with leaving the scene of an accident after causing personal injury

About a week after Kopechne's death, Ted pleaded guilty to a charge of "leaving the scene of an accident after causing personal injury without making himself known." He was given a two-month suspended sentence.

Chip Somodevilla/Getty Images Ted Kennedy talks with the news media after walking off the floor of the Senate after a roll call vote to achieve cloture on the nomination of Judge Samuel Alito to the Supreme Court passed 72 to 25 on Jan. 30, 2006

Ted said the incident still haunted him decades later

In his 2009 autobiography True Compass, Ted, who died at age 77 in 2009, said Kopechne's death stayed with him for the rest of his life.

"That night on Chappaquiddick Island ended in a horrible tragedy that haunts me every day of my life," he wrote. "I had suffered sudden and violent loss far too many times, but this night was different. This night I was responsible. It was an accident, but I was responsible."

Kopechne's family is still working toward justice for her memory

Although Kopechne's parents have died, her cousin Georgetta Potoski and Potoski's son, William Nelson — authors of the 2017 book Our Mary Jocontinue to seek answers.

"In the beginning when you searched for Mary Jo online, all you would see is that she was the daughter of an insurance salesman. Very Catholic. A secretary to Bobby Kennedy," Potoski told PEOPLE in July 2021. "The stories were always about Ted Kennedy. But now if you research her name, people are beginning to learn how accomplished and talented she was. She was much more than a secretary."

Potoski added, "We want people to know who she was and what she stood for as a person."

The two created a scholarship in Kopechne's name at Misericordia University in Dallas, Penn., aiming to honor who she was as an individual beyond the circumstances of her death.

"Mary Jo was a teacher in Alabama before she moved to Washington, D.C., to work in politics," Nelson said. "She cared about education and wanted to help people, and we want her to be remembered for the things she cared about."

Related: A Look Back at the Long List of Kennedy Family Tragedies

Even as they strive to celebrate her accomplishments, Potoski and Nelson "never stop looking" for the truth surrounding Kopechne's drowning. 

"I think there are people out there who know more about what happened that night," Nelson told PEOPLE. "The more awareness that is created around Chappaquiddick and Mary Jo, I think it shakes the tree a little bit and maybe there will be people out there who will share a small detail, another piece of the puzzle, and help us get to the truth."

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