We meet Jane Doe's childhood friends and find out about her early life. After her brother's suicide, she began a spiritual quest and lived near Yosemite in a so-called cult. There she may have crossed paths with two other men who may have been involved in her death. Investigators name their most likely perpetrator.

Experienced hiker Meredith Emerson goes missing on Blood Mountain, Georgia and a massive search begins. Investigators soon learn of two other missing hiker cases that have ended in murder. Has a serial killer taken Meredith? Can she be rescued in time?

Serial killer Gary Hilton has killed two women in National Forests; now he's taken Meredith Emerson. So far he's escaped twice, but as police search a dumpster full of bloody clothes, Hilton is sighted nearby: can they catch him before he kills Meredith?