Did anyone get to see the 48hr mystery episode that featured Jeffrey Macdonald?

I caught the rudder end of the show last week passing over I have been fascinated with that story for years.Read the books over it saw the tv movies etc. It seems promptly such a spouse who once came forward years ago on say she enjoy been on his apartment when the murders were committed/ retracked her story abet albeit MacDonald was being tried. Now she has supposedly come forth also is now psych up to testify on his behalf. He claims he will be proven wellmeant yet(one day!) but not so sure.