In 1983, Cowles joined The Mirror Theater Ltd's Mirror Repertory Company for their first repertory season, performing in Paradise Lost, Rain, Inheritors, and The Hasty Heart.[4]
Cowles' first television part was Joe Czernak in the series NYPD in 1969. He was nominated for a Daytime Emmy as Outstanding Actor in a Daytime Drama Series in 1978 and as Outstanding Supporting Actor in a Daytime Drama Series in 1981, both for his part as Billy Clyde Tuggle in All My Children, a role that he created and wrote.[5]
Cowles' first film was the comedy drama Me, Natalie (1969) in which he played Harvey Belman. Al Pacino also made his debut in this film.
Cowles also starred in three short plays for the public radio show and podcast Playing on Air.[6][7][8][9]
Personal life
In 1983, he married actress Christine Baranski with whom he had two daughters, Isabel (born 1984) and Lily (born 1987). In a New York Times profile of his wife, he was described as "the black sheep member of a family with ties to Cowles publishing and Drexel banking".[10]
He was an enthusiastic motorcycle rider.[5]