The legendary Shaun Cassidy joins us. The Road To Us. North American Tour. Singer, songwriter, actor and television producer and screenwriter. He has created and/or produced a number of television series, including American Gothic, Roar, and Invasion. Cassidy was also an executive producer and writer for NBC's medical drama New Amsterdam. Known for his role in The Hardy Boys/Nancy Drew Mysteries and his hit song "Da Doo Ron Ron”.