. >> my name is john syers, okay.sheriff's office. >> reporter: lead detective john syers and his partner a.j. scarpati introduced themselves. asked cara, who did she shoot? did she know him? without hesitation she said -- >> my ex-husband. >> who do you -- >> jay. >> i'm sorry. what do you call him? >> jay. >> jay? >> j.j. >> okay. >> it's j.j. rush. i call him jay. >> reporter: that's right, her ex-husband, j.j. rush. small world. detective syers knew j.j. had run into him at crime scenes. jj was a medical examiners investigator. but why would cara shoot him? her answer was right there in the 911 call. >> my ex-husband came in and he raped me. >> he raped you? >> i shot him >> reporter: rape? but, that's all she said on the topic. until about two hours later, when she told a deputy she needed medical attention. >> i need to see a doctor. i've been hurt. >> reporter: it was detective syers' job to sort through it all, and he began by showing cara a bit of kindness. >> i went over and took the handcuffs off of her. >>