OT, but I was just watching a show about a crime more than 25 years ago...the woman went missing from her night school class at a community college, her car was there, but she was gone. Anyway, her body was found 3 weeks later in an abandoned apartment complex, one of the units. They did have a fingerprint, but nothing to match it to. Many years later, they were able to get DNA from the evidence at the scene. And years after that, it was matched to a serial killer in custody in California, who was a long-distance trucker.
Anyway, my thoughts were; A. Missing persons have not changed all that much as far as LE goes, in all of those decades; if not for the DNA and fingerprint, no arrest would ever have been possible. They (Tulsa PD) took the case seriously from the first day and looked everywhere for her, had a witness who used her credit card for a sketch, etc. more than we have in Holly's case, but still, they wouldn't have caught him, if not for the fingerprint and DNA. B. He saw her at her night college and abducted her. Could someone who saw Holly at school the day before have followed her home, not being able to take her in daylight at the busy school? He could have had all night to acclimate himself to the wooded area and plan his escape. So it made be think it does not HAVE to be a local. Also, this woman's purse was found on the side of road several miles from the scene, like Holly's. If Holly's perp was the one who tossed her lunch bag, could there be a print, just no one to match it to? Or even skin cells, if truly lucky?
Anyway, my main interest was the fact that in the mid-seventies, if LE took a missing persons case seriously, they did the same things that are still being done today, basic searches of waterways, wooded areas, etc. interviews with neighbors, etc...nothing much new in the science of missing persons, unfortunately. They are still a tough crime for LE to solve. The only added plus is the ability to track cell phones and bank activity, yet in recent cases, the phones have not been of much value, for various reasons. Too bad, as they could be the key if only all the victims had them with them, or if some of the perps hadn't wised up to them. JMO