Jodi Arias Takes the Stand in Murder Trial

The woman who says she killed ex in self-defense testified in her murder trial.
2:53 | 02/05/13

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Transcript for Jodi Arias Takes the Stand in Murder Trial
We're going to get right to the dramatic testimony in the breakup murder trial. Jodi arias takes the stand and says she did kill her ex-boyfriend. Ryan owens has been covering the trial from phoenix. And joins us with all the latest. Good morning, ryan. Reporter: Good morning to you, george. As you know, about all of the legal experts said that jodi arias would have to take the stand to try to convince this jury she killed in self-defense. Well, she started her story. The question this morning, will anyone believe her? You may come forward and take a seat, please. Reporter: Jodi arias, admitted killer and serial liar. Took the stand saying -- swear to god? Reporter: She'd tell the truth. How are you feeling right now? Nervous. Reporter: She should be. The 32-year-old could face the death penalty if convicted. Her defense attorney wasted no time getting to arias' newest That she stabbed and shot her ex-boyfriend in self-defense. Did you kill travis alexander ON JUNE 4th, 2008? Yes, I did. Why? The simple answer is that he attacked me. And I defended myself. Reporter: Arias looked right at jurors as she told her story. The same jury that has watched her lie to police, over and over. I did not hurt travis. Reporter: The prosecution is hoping the jury will not believe a word out of her mouth. They say arias stalked travis alexander. And then planned the brutal killing of the businessman. Arias spent almost two hours on the stand monday. Most of it focused on her childhood. With her mother in the front row, she claimed her parents beat her. Hit you hard? It felt pretty hard, yeah. It left welts. Reporter: She also testified about early boyfriends she says were processive. The defense is hoping to convince the jury arias was a victim of repeated abuse, who ultimately had to kill to save her own life. Arias also tried to explain away this jailhouse interview with the show "inside edition." No jury is going to convict me. Why not? Because I'm innocent. And you can mark my words on that one. Reporter: Now, telling this jury, that was not as arrogant as it sounded. At the time, I had plans to commit suicide. So, I was extremely confident that no jury would convict me because I didn't expect any of you to be here. Reporter: This jury has taken copious notes since the beginning of this case. But not when jodi arias got on the stand. Pencils and papers down, they were riveted. And the main event is still ahead. The fiery prosecutor taking on the woman he calls a cold-blooded murderer, in cross-examination. It should be something to see.

This transcript has been automatically generated and may not be 100% accurate.

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