William and Wilber grew up in the rural village of La Paz, Colombia, believing to be fraternal twin brothers for much of their life, along with their family and friends.

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But at age 25, William was mistaken by a young woman for another twin, Jorge. That chance mistake lead to the discovery that Jorge was actually William’s biological, identical twin brother living in Bogota, 150 miles away. And Jorge was living with Carlos, Wilber’s biological, identical twin brother.

In the only known account of two sets of identical twins swapped at birth, the world’s leading expert on twin studies Nancy L. Segal tells the unbelievable story of the reunions between William and Jorge, and Wilber and Carlos.

Segal joins host Larry Mantle to talk about her latest book, “Accidental Brothers: The Story of Twins Exchanged at Birth and the Power of Nature and Nurture.”

Guest:

Nancy L. Segal, professor of psychology at California State University, Fullerton, and director of the Twin Studies Center; author of her latest book, “Accidental Brothers: The Story of Twins Exchanged at Birth and the Power of Nature and Nurture” with Yesika S. Montoya (St. Martin’s Press, 2018)