had dinner, knowing pabon was waiting nearby.. he followed up the street, an all-time saying that aurea. and at the, time he approaches her, and attacks adam. >> witnesses said, aurea just, they're watching as adam was killed. she didn't call for help. she didn't try to save her husband. she didn't even run. those witnesses, also reported a brief conversation between aurea and the attacker before he punched her to the ground. it wasn't just aurea's behavior that raised a red flag, so did her injuries from that night. >> adam had been brutally murdered with a knife and cobblestone and bled to death on the street. and, she had a little nick on her head. and, forgot to scream. and, forgot to run. >> and there was something else that the agents found incriminating. the couple's prenuptial agreement. >> in terms of their prenuptial agreement, they had significantly more lucrative if he died versus a divorce. roughly, she would receive $3500 a month for three years if they divorced. if he died, she was going to take home eight or $24 m