If Marcia Trimble were alive today, she'd be 43 years old. She might be following the case of Jerome Barrett, who goes on trial next week for killing a 9 year old girl scout in Green Hills. But this case is about Marcia's murder and all of Nashville will be watching as attorneys take us back to that day in February 1975, when she disappeared while delivering cookies in her neighborhood. 
On Friday, Judge Steven Dozier issued some new rules on the evidence.  As News 2 reports, jurors will never know that Jerome Barrett was convicted earlier this year of killing Vanderbilt student Sarah Des Prez in 1975.  They will not hear testimony from a Nashville woman who was brutally attacked two days before Marcia's disappearance.  They will hear testimony from a jailhouse snitch, who says Barrett told him he killed Trimble, but didn't rape her.