(BBC News) In 2002, Pennsylvania accounts clerk Brenda Heist set dinner out to defrost, folded some laundry, and took her daughter and son, eight and 12, to school.

Then she disappeared, taking a spur-of-the-moment decision to join a group of homeless hitchhikers on their way to Florida.

She had been in the middle of an amicable divorce and had recently learned she had been denied housing support.

Several years and countless hours devoted to the investigation later, her husband Lee went to court and had Brenda declared officially dead.

Brenda Heist, now 54, is suddenly back, having been found living the life of a vagrant in Florida. So what happens next?

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