her husband julian lewis an her stepson c.j. in their mobile home in virginia. this was a crime of conspiracy. lewis didn't fire the shots. the two men who did only got life sentences. the judge called theresa lewis the head of this serpent but her attorneys say her i.q. is in the low 70s, and she has dependent personality disorder, making her vel neshl to coercion by others. is it your coercion in this crime? >>yes. shallen berger and the experts have stated that she was being used by shallenberger, not the other way around. >> reporter: shallenberger had an affair before the killings. they have letters saying the only reason he sleft with lewis was so she would give me the