Metro police said they will follow all new leads that could take them to Janet March's body.
Arthur March told investigators he helped Perry take the body to Kentucky where he put it under a brush pile.
Early this year, investigators looked in an area near Franklin, KY.
The land is near golf professional Kenny Perry's golf course.
The course opened in 1995, but a man who helped build the course said there were brush piles in the area in August 1996 when Janet March disappeared.
Tennessee's archaeologist had some bad news for investigators. Nick Fielder said finding Janet's body without someone taking them to the exact spot would be highly unlikely.
"It would take somebody walking up on the situation, recognizing it as human bone and then calling the police," Fielder said. "But a more likely scenario would be to have somebody that knew where it was be able to take you to that spot."
Arthur March could not take investigators to the exact spot.
Arthur said he remembers he and Perry staying in a hotel along the interstate, but he can't remember which one.
He said he cannot remember the exact exit they took off the interstate.
It seems as though the only person who might be able to help police is Perry, and he hasn't said anything so far.