When her mother Jane suddenly disappears, Casey must face the dark secrets of the past to find her before it's too late.

The true story of 14-year-old freshman Abby Hernandez who vanished while walking home from school in North Conway, New Hampshire. Kicking off the state’s largest search, Abby’s disappearance left her family, especially her mother Zenya , investigators and the community mystified of her whereabouts. Taken by Nathaniel Kibby, Abby was kept is a soundproof container and forced to wear a shock collar while enduring psychological, sexual and emotional abuse. Despite suffering daily torture, Abby kept hope alive that she would one day be able to see her family again.