In 1981, 13-year-old Mary Day disappeared from her Seaside, Calif., home, with no sign of her anywhere. It would be 22 years before she reappeared, bringing along more questions than answers.

In 1981, 13-year-old Mary Day disappeared from her Seaside, Calif., home, with no sign of her anywhere. It would be 22 years before she reappeared, bringing along more questions than answers.