>> reporter: arias, accused of planning the brutal murder of her ex-boyfriend travis alexander, says she killed him in self-defense. across the country, people have been watching every salacious moment of the trial like a television soap opera. a direct mail production manager in washington, d.c. -- >> i'm addicted. i get home and immediately turn my tv on, turn my computer on. >> reporter: gina olsen watches any way she can, even when she's at work. >> even when i'm on the phone. good thing i can multi-task. i'm doing important stuff, talking on the phone, but i'm also listening. wait, hold on a second, and i'm listening. i know that's a good part. i'm sorry, i had computer problems. >> reporter: ap reporter brian scoloff co-wrote "killer girlfriend: the jody arias story." >> people come off work to be a part of this. they say watching it on tv, watching it online wasn't enough, they want to see the