I was a teen idol and that has a short shelf life.

S. Since the mid-1990s Cassidy has worked exclusively as a writer/producer in television creating a number of critically acclaimed television series including American Gothic Roar (with Heath Ledger in his American debut) and Invasion. A.

In the 1980s he acted on stage on Broadway and in the West End of London. Shaun Paul Cassidy (born September 27 1958) is an American television producer/creator screenwriter actor and former singer. Since the mid-1990s Cassidy has worked exclusively as a writer/producer in television creating a number of critically acclaimed television series including American Gothic Roar (with Heath Ledger in his American debut) and Invasion.