
Unknown Boise, Idaho Hitchhiker:
One of the mysteries of the Bundy case still is who the hitchhiker he confessed to picking up, kidnapping, and murdering on September 2, 1974 was, on his way from Washington to Utah, and dumping her remains into Idaho's Snake River. This confession was one of two he made to Idaho detectives, along with Lynnette Culver in Pocatello on May 6, 1975. And he provided enough specific details about what she was last seen wearing and knowing details about her family life that investigators and the Culver family do satisfactorily accept his confession as genuine, along with Idaho detectives saying they were 99% certain Bundy was telling the truth that he killed Culver as well. And he also admitted to dumping her remains into the Snake River, too.
Sources:
https://www.youtube.com/watch?v=g4PZf0fx8qo
https://www.youtube.com/watch?v=ftuqYh_SvPI
https://anotherbundyblog.com/tag/lynette-culver/
So, to get back to the hitchhiker, Bundy said he never got her name, but described her as being white, between 16 - 18, 5'6", had light brown hair, and was wearing a green backpack with a beaded necklace, and believed she was on her way to Montana, along with taking her backpack with him to Salt Lake City, and eventually discarding it there, also.
Source: https://anotherbundyblog.com/tag/lynette-culver/
To this day, no positive identification has been made still about who he was referring to, and LE said they couldn't find any missing person's reports of girls who fit the description he gave. And Ada County LE had launched a new effort to to identify who this was in Nov 2024: https://adacounty.id.gov/sheriff/news/acso-seeks-publics-help-to-identify-teen-abducted-by-ted-bundy-in-1974/
And Bundy confessed to death row appellant attorney Polly Nelson that he killed this hitchhiker, too: https://www.youtube.com/watch?v=uCL2mGM7EtQ
If she presumably existed, then I suspect/presume the reason they couldn't find any reports that matched Bundy's description is because she didn't live locally to the Boise area and/or might've not really been from the state at all. So, it could be a name that's buried deep in a plethora of statewide missing persons reports in Idaho, or the FBI's database.
Though, it's certainly possible too that no report was ever filed that she was missing. But that didn't seem Bundy-like to target a girl no one would report a missing person case for.