The Oprah Winfrey Network on Wednesday released a clip of Winfrey's interview with Matt Sandusky, who alleges he was sexually abused by his father.
Matt Sandusky tells Winfrey that his father had a bedtime "ritual." The full interview airs Thursday at 9 p.m. Eastern.
The network says Sandusky also describes grooming, methodical control and manipulation by his father.
Jerry Sandusky is a former Penn State assistant football coach now imprisoned for molesting 10 other boys.
Matt Sandusky is one of six children adopted by Jerry Sandusky and his wife. He also discussed the alleged abuse in the documentary "Happy Valley."