miriam tavares.d out her 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 th