A retired investigator says the release of ransom notes in the Nancy Guthrie kidnapping mirrors the 1995 strategy that helped identify the Unabomber.
https://www.foxnews.com/us/nancy-guthrie-ransom-notes-release-follows-unabomber-precedent-cracked-case-expert-says
https://www.foxnews.com/us/nancy-guthrie-ransom-notes-release-follows-unabomber-precedent-cracked-case-expert-says