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COLUMBIA (AP) -- The memoir by South Carolina first lady Jenny Sanford is hitting the book stores just ahead of a nationally telecast interview.

The book "Staying True" goes on sale on Friday. Later Friday, Jenny Sanford appears with Barbara Walters on ABC's "20/20."

"Staying True," which tells the story of Sanford's marriage to Gov. Mark Sanford and the trying events of the past year, was originally scheduled for publication in May.

The governor disappeared for five days last year only to return and admit during a tearful Statehouse news conference that he had an affair with an Argentine woman.

Jenny Sanford filed for divorce in December on the grounds of adultery. The divorce will be final later this month.

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