it was cara ryan's own words.ully to the stories she told, and compared them. >> what they were, how they changed over time. and that was really when it kinda hit me just how different all of these stories were, and how unbelievable they were. >> reporter: there were, said the detectives, four main stories. the first, what she told 911 and the first responding officers. >> my ex-husband came in and he raped me. >> okay when did this happen? >> just now. he came in and he raped me and i took my gun and i shot him. >> reporter: shot him during 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. 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. >> reporter: a 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 befo