her name is kathy gomez. >> kathy, we're on the record. >> cross tracked her down and videotaped his because eric glisson -- >> gomez, who was 16 at the time of the murder, says she first came in contact with the detectives for only one reason. she was friends with miriam tavares, who spoke only spanish. >> so you served kind of as a translator? >> yes. >> but by the time she had walked out of the police station, kathy gomez had become the key witness in the investigation of the fedex murder. gomez had signed a sworn statement claiming she overheard the same suspects talking about details of both crimes that only the killers or the cops would know. >> tell me if you recognize your signature on that document. >> yeah, that's my signature. >> here's the problem. it's a crime kathy now says she knew nothing about. >> i even told them i didn't see nothing like that. >> what's more, gomez says she could hardly read or write english. >> i couldn't read it. they just wanted me oh, you have to sign this. you don't have nothing to do with this. >> kathy gomez told me that entire statement was