Scott Peterson's sister-in-law says she has evidence that proves there’s ‘no scenario of guilt’

The sister-in-law of Scott Peterson, who was convicted in the death of his pregnant wife and unborn son nearly two decades ago, said evidence she has collected over the years shows there's "no scenario of guilt" for him. 

Peterson was arrested after Amber Frey, a massage therapist living in Fresno, told police that they began dating a month before his wife’s death and that he had told her she was dead. Prosecutors said Peterson dumped his wife's body in San Francisco Bay and he was sentenced in 2005 to death. He has maintained his innocence and is preparing for a new sentencing trial.