In 1969, a young Ted Kennedy drove his car off a bridge on Chappaquiddick Island in Massachusetts. He managed to get out of the car and survive, but the 28-year-old woman in the passenger seat did not. Kennedy fled the scene and didn’t report the incident until the following morning. As with all Kennedy scandals, conflicting reports of what exactly happened led to enduring conspiracy theories. We’re joined by Liz McNeil, editor-at-large at PEOPLE, author of JFK Jr.: An Intimate Oral Biography, and host of the Chappaquiddick podcast COVER-UP, to discuss what we know about that night — and what we don’t.