On October 8, 1976, 16-year-old Trenny Lynn Gibson, a sophomore at Bearden High School in Knoxville, Tennessee, vanished during a school field trip to the Great Smoky Mountains National Park. She was one of about 40 students on a trip for an ornamental horticulture class. The group was hiking to Andrews Bald, and during the hike, the students separated into smaller groups. Gibson was seen hiking with various classmates at different times throughout the day.
The last confirmed sighting o
...Read MoreLast Seen: Oct 08, 1976