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In 1997, a Massachusetts jury convicted Louise Woodward, a 19-year-old au pair, on second degree murder charges for allegedly shaking the baby in her charge, Matthew Eappen, to death.
The judge reduced the charged to involuntary manslaughter and released Woodward on time served, but the case exposed many Americans to "shaken baby syndrome" for the first time.
As Retro Report producer Miriam Weintraub tells The Takeaway, shaken baby syndrome had rarely been questioned publicly before Woodward's case.
In the aftermath of the trial, a prominent medical expert who testified against Woodward changed his mind on the syndrome—and Woodward's guilt.
Check out a video of Retro Report's findings below.