When Alicia Navarro disappeared in 2019 from her home in a Phoenix suburb days before her 15th birthday, she left a signed note for her family promising she would return. Believing she would keep her promise, Jessica Nunez never stopped searching for her daughter. Nunez's yearslong search came to an end Sunday when her daughter, now 18, walked into a small-town Montana police station near the Canadian border and identified herself as the missing teenager.