Hey man. I came here from Yt channel Brew and after some research about the murder case, I have a different theory. IMO, the guy was mentally unstable. You see, as things played out, tammy wasnt even afraid when she was pointed by a gun, at least thats what report suggests. Things happened quickly and the guy also didnt act coldly after that, he shot her again and dragged her deep into the field and took some identifications from her, but also, didnt take everything as he left a neckless or something like that . He didnt quite plan how to commit the crime as investigators suggested that Tammy went to the cornfield with him willingly and wasnt afraid. It shows that things took a turn quickly and the murderer, enraged or something shot her and then panicked and left. If he was planning to murder her beforehand, he wouldve worked a plan out. it suggests that the murderer maybe had mental stress and anxiety issue and probably thats why he had a gun with him. Now, the reason i am emphasizing on this fact is because tammy went to Rainbow Prison MInistries which was a faith based program for former inmates ,located in the remote mountaneous region of Georgia . The fact is that,she probably met her killer there. As I mentioned before, the killer might have had mental issues and probably thats why he went to the faith based program and was charmed by Tammy which mightve been mutual but took a tragic turn. I think we should look into the number of male residents in that rehab center and try to check which one of em went to psychiatrists or had criminal history . But , i think the guy didnt have a criminal background. The way he just committed the crime and ran away after that doesnt show any plan or clinical activity of a criminal . Rather, it suggests sudden impulse and panic .Theres a high chance the guy was prescribed to go there by a psychiatrist . This would make things easier since there wasnt a large number of psychiatrists then. Therefore, the number of male residents in the rainbow prison ministries and their identifications should be checked ,especially if any of them had mental issues and went there despite not being a criminal. Hope it helps.