(AP) The son of former Penn State assistant football coach Jerry Sandusky is participating in a documentary about his father's sexual-abuse case.
Matt Sandusky tells the Centre Daily Times (http://goo.gl/YGc0dH) that he took part in "Happy Valley" to advocate for child sexual-abuse survivors.
The 100-minute film is being screened this week at the Sundance Film Festival in Utah. It explores whether it was an open secret that Sandusky was molesting boys.
Matt Sandusky was expected to be a defense witness at Sandusky's trial but instead came forward to say that he had been abused by his adoptive father.
Jerry Sandusky is appealing his conviction and 30- to 60-year prison term.
Matt Sandusky, married with four children, says he hopes to start a nonprofit in State College and advocate for abuse survivors.