miriam tavares. window and saw it all, eric and the others, smack in the middle of the cab driver robbery that ended in murder. >> is it possible miriam saw you commit a crime? >> no. >> not any crime? >> i wasn't there. >> bad blood between you and miriam? >> yes, bad blood. >> eric says he had a brief sexual relationship with miriam that did not end well. >> you have a fling with a girl and then you just cut it off abruptly. she may feel slighted. >> slighted enough to make you a murder suspect? >> i guess so. >> whatever her motivation, the question is how reliable was she as a witness? all these years later eric finally had someone to take another look at miriam's story. attorney peter cross. >> there's no doubt this woman was lying. i went out to the crime scene and she could not possibly have seen what she said occurred. >> so what could miriam tavares really see? here's the problem with miriam's story. from that police video, we know this is where the cab came to rest. we also know the shootin