First go to the state website and find the addresses of meth lab houses. I start there since can be a very expensive undertaking. Then check to see if it is on a tax sale list or on the unsold tax lien property list kept by the county or the county land bank.
You can also find documents on the Shelby County recorders site regarding any loans that were taken out. If all looks clean exceot for unpaid taxes, then it becomes a search for possible heirs who may exist and have inheritance rights. It's basically a jigsaw puzzle that you find a piece at a time.
You have to either go this route, find heirs and get quit claims or other documents signed by them so you can get title or find out when it will be scheduled for a tax sale and be ready to bid. You may find that someone purchased it at a tax sale and is in the redemption period. If you win the bid at a tax sale you then go through a waiting period that allows relatives or anyone else who has a legal claim to the property to come forward and pay the taxes plus interest to you or not do anything and let property go to you and you get a special deed.
There are quarterly or every 6 months tax lien sales. Typically about 45 days or so before the sale there is a workshop you can attend to understand the process and register on the website where tax sale properties are posted.
Good luck and I hope you find a solution and will share it with us.