The soap industry first took notice when he got rave reviews as Casey Bowman, a man with a troubled father, on Loving from 1992 until the show's cancellation in 1995.

Stewart's most famous role came as mobster Danny Santos on the soap Guiding Light since November 1998. But in August 2005, he announced that he will exit his role along with co-star Nancy St. Alban (Michelle Bauer Santos) when their contract expires. They will make their final appearance in the fall.

Soap Opera Stars, Television Personalities,