Jodi Arias Murder Trial: Why She Said She Did It

We begin with the twisted tale of love gone deadly wrong today -- areas the young woman on trial for murder in Phoenix Arizona. Took the stand for a second day to trying convince a jury that when she... See More

We begin with the twisted tale of love gone deadly wrong today -- areas the young woman on trial for murder in Phoenix Arizona. Took the stand for a second day to trying convince a jury that when she stabbed slashed and shot. Her onetime boyfriend it was all in self defense. But that wasn't always her story she faces the possibility of the death penalty ABC's Brian Owens has this report for our series. -- -- -- -- Did you kill Travis Alexander -- June 4 2008. Yes it's the legal equivalent of a hail Mary pass. -- do it. Defense attorneys almost never want to put a client on the stand but when that client is an admitted killer and a serial liar. There isn't much choice revealing. -- areas could face the death penalty if she's convicted of murdering her ex boyfriend Travis Alexander. The thirty year old Mormon businessman was stabbed 47 times his throat was slit. And he was shot in the head areas claim she killed Alexander in self defense. This is the -- -- intact. -- she testified about how she met Alexander at a Las Vegas convention he stopped -- truly hands. -- -- patent cases and told the jury he seemed to wanna kiss are almost immediate. -- he leaned in very close. As if you want to kiss me pennies but he has split screen staring in my eyes and like he wanted to kiss me but he didn't. She went into graphic -- -- about their first sexual encounter just a week after they met. He began to -- that my clothes. I didn't want to tell you know. So I just can't prove that whether -- I want -- -- I don't want anything that. They may be -- season. So far areas has spent more than five hours on the stand he's determined to train -- Literally holding court. Training she's giggled -- and I think hidden. It and drone on and on about her life in -- detail it's almost impossible to believe someone has a memory that good. I was in the dressing room -- My -- when he himself -- laughter. Wandering around the kind of wandered back to the lobby. Way back to see golden -- statue there are people there getting there helping speeches. That means that they use 100000 dollars -- -- when you're hearing. But after two days of testimony she still hasn't specifically address what happened the day of the crime. There will be plenty of time for that. -- -- when this fiery prosecutor gets a chance to cross examined the woman. He calls a cold blooded murderer he says areas stalked her ex for months and slaughtered him in the shower of his Arizona home in a jealous rage. He says you can't believe a word she sells them all and -- -- such. It's true since her arrest in 2008 whenever her past she has had a series of changing stories. In these interrogation tapes she -- where she didn't hurt Alexander. I'm just here -- alienate. The who -- -- lying to the lead detective. Over and over again and yeah. I think. Its. Even denying being at Alexander's how's that -- despite an overwhelming amount of physical evidence including a picture over on his bad. And her bloody palm -- in his bath room. There's even a photo of her moving his bloody body. Yeah and those pictures including some of Alexander in the shower seconds before his death were recovered from this camera found in his washing machine. The jury has heard and seen all of that evidence plus this interview she gave to the show inside edition right after her arrest. Nigerians are going to convict me. -- -- Because I'm innocent and you can mark my -- on -- On the stand in areas tried to explain that away -- now testifying she not only killed Alexander but was planning to kill herself. At the time -- had -- committing suicide. -- So it's extremely confident that no jury would convict me because I didn't expect any need to be here. But he or she is and she's talking and talking on Good Morning America ABC news legal analyst Dan Abrams says she's a good witness HON's Nancy Grace. Beg to differ but as a witness I didn't viewers -- I thought it's. Actually -- and you're under rehearsed all I am a teacher I -- she did pretty good isn't -- I am. -- I am I'm I want. I could have been -- -- they thought they -- is expected to be on the stand at least a few more days trying to convince this jury she killed in self defense and therefore. Doesn't deserve to die for the crime. I'm Ryan Owens for Nightline in Phoenix.