Скачать или смотреть "48 Hours" preview: "A Sister's Fight for Her Brother"

Scott and Janet Pettit were killed in their Modesto, California, home in 2013. Their son, Brandon Pettit, is accused of hiring a friend to kill them. But his sister, Lauren Pettit, has stood by her brother from the beginning and insists he's innocent. "48 Hours" correspondent Erin Moriarty joins CBSN AM with a preview of Friday's report.

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