Switched at Birth

Host Ira Glass introduces four characters: Kay McDonald, who raised a daughter named Sue, and Mary Miller, who raised a daughter named Marti. In 1994, Mary Miller wrote letters to Sue and Marti, confessing the secret she'd kept for 43 years: The daughters had been switched at birth and raised by the wrong families. This week's entire show is devoted to the story of Mary Miller's secret and what happened when both families finally learned the truth. (6 1/2 minutes)

Jake Halpern tells the mothers' sides of the story. At 69, Kay McDonald had to cope not only with the news that her daughter wasn't her own, but that another mother had known the whole time. And Mary Miller explains why she was tormented by her secret but unable for decades to share it. (26 minutes)