cara ryan's own words.she told and compared them. >> what they were, how they changed over time. and that was really when it kind of hit me just how different all of these stories were and how unbelievable they were. >> they were, said the detectives, four main stories. the first, what she told 911 and the first responding officers. >> my ex-husband came in and raped me. >> okay, when did this happen? >> just now. he came in and raped me and i shot him. >> shot him while or after he raped her. they asked her that as she sat in the patrol car. at this point, the audio was turned on. >> he raped me. he got on top of me and he held me down. at this point, i had the gun. >> okay. and then what happened? >> and then i fired the gun. >> where was he? >> standing over me on the bed. >> the second version emerged in the interview room. cara said j.j. raped her and left. but when he came back, she heard and recognized his voice threatening her before she shot him. >> and he told me he was going to kill me and he was