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Fifteen-year-old Martha Moxley was murdered on the night of October 30, 1975, in Greenwich, Connecticut. Nearly 50 years later, journalist Andrew Goldman revisits the case from the ground up in the podcast Dead Certain, bringing new investigative material and archive audio spanning five decades.

On the night before Halloween 1975, fifteen-year-old Martha Moxley was bludgeoned to death outside her family home in Belle Haven, Greenwich, Connecticut. Twenty-seven years later, her killer—Michael Skakel, a Kennedy family cousin who was also fifteen at the time—was convicted in a 2002 trial that captivated the nation and raised uncomfortable questions about wealth, privilege, and the American legal system.

On October 30, 1975, 15-year-old Martha Moxley was bludgeoned to death in her family's backyard in Greenwich, Connecticut. Twenty-seven years later, her neighbor Michael Skakel—a Kennedy cousin—was convicted of the crime. But the conviction didn't hold.

On October 31, 1975, 15-year-old Martha Moxley was found bludgeoned to death in her family's backyard in Greenwich, Connecticut. The murder weapon—a Toney Penna golf club—belonged to her neighbors, the prominent Skakel family, setting off a case that would span decades and implicate a Kennedy nephew.

Michael Skakel, a Kennedy cousin, has broken his silence on the 1975 murder of 15-year-old Martha Moxley in Greenwich, Connecticut—a case that remained unsolved for five decades. Skakel, who was convicted and later exonerated, is now sharing his account in an NBC News podcast.