I think you are thinking about this case? But he wasn't a dean and also wasn't single (he was in a gay relationship with somebody who apparently knew nothing of child abuse).
"A Duke University official has been charged in federal court with offering his 5-year-old adopted son up for sex. Frank Lombard, associate director of the Center for Health Policy, was arrested Wednesday in Raleigh, the FBI said. "
http://abcnews.go.com/News/story?id=7942546&page=1#.T1FqwXkyCSo
"A Duke University official has been charged in federal court with offering his 5-year-old adopted son up for sex. Frank Lombard, associate director of the Center for Health Policy, was arrested Wednesday in Raleigh, the FBI said. "
http://abcnews.go.com/News/story?id=7942546&page=1#.T1FqwXkyCSo