I would describe it as jet black with a white pattern on its back, not quite and hourglass but unique. I got a photo so if anyone's could help I looked everywhere else on the internet and couldn't find a photo that matched what this looked like!
CLOSED: Tennessee spider found Inside
Looks like an eastern parson spider (family Gnaphosidae) - http://www.spiders.us/species/herpyllus-ecclesiasticus/
Harmless to humans...
Thank you! Everything online was bringing up black widows and lookalikes.. Glad to know that's definitely not the case.