Now Playing: Jaycee Dugard Dependent on Her Abductor

Now Playing: Introducing Jaycee Dugard to Nancy Garrido

Now Playing: Jaycee Dugard Pregnant at Age 14

Now Playing: What caused Otto Warmbier's brain condition: Part 5

Now Playing: Bringing Otto Warmbier home from North Korea: Part 4

Now Playing: What happened when Otto Warmbier was detained in North Korea: Part 2

Now Playing: Former prisoners in North Korea recall the conditions they were held in: Part 3

Now Playing: What Otto Warmbier's tour through North Korea was like: Part 1

Now Playing: Former US State Dept. diplomat on why people are held prisoner in North Korea

Now Playing: Otto Warmbier's high school friends remember him

Now Playing: Teen accuses HS football star: 'I just felt like he took advantage of me'

Now Playing: Student reports seeing teacher kiss Tennessee teen Elizabeth Thomas

Now Playing: Teacher Tad Cummins' developing relationship with Tennessee teen

Now Playing: Teen's allegation of rape against football star divides Alabama town: Part 4

Now Playing: Friend says teen 'wasn't fully conscious' when she was left in bedroom: Part 2

Now Playing: Teens gather for night of underage drinking at high school party: Part 1

Now Playing: Friends hold makeshift graduation for classmate on house arrest: Part 5

Now Playing: Teacher overhears teens looking up the definition of rape: Part 3

Now Playing: Football star takes plea deal ahead of trial for first degree rape: Part 6

Now Playing: Nixon's secretary's unusual explanation for erased tape