In October 2013, 14-year-old Abby Hernandez disappeared on her way home from school without a trace. Nine months later, the New Hampshire teen returned home with a harrowing story of kidnapping, captivity and unspeakable abuse. Mostly silent for nearly five years since she disappeared, Abby tells her story for the first time to ABC News correspondent Deborah Roberts. She opens up about the difficult details of her abduction including being held for months in captivity by Nathaniel Kibby, who forced her to wear a shock collar and kept her prisoner inside a shipping container; and the psychological strategies she had to deploy in order to stay alive, including bonding with Kibby. Abby discusses her life now and how it has changed since her captivity.

Interview with Elizabeth Thomas, who was taken at age 15 by her Tennessee high school teacher, resulting in a 38-day nationwide manhunt.