Her grandfather, Neil S. McCarthy was an entertainment lawyer whose clients included Paramount Pictures, Howard Hughes, Louis B. Mayer (personally), and Cecil B. DeMille.
Gless, who was best known for her Chris Cagney role on the female cop series Cagney & Lacey (1981), married the producer of the show, Barney Rosenzweig, in 1991. A year earlier, Rosenzweig had divorced his wife of 11 years, Barbara Corday, who was the creator/writer of Cagney & Lacey (1981).
By 1982, she was the last remaining performer to be working under a standard studio contract, having been signed to a 10-year contract in 1974.
Best known by the public for her starring roles as Sgt. Christine Cagney on Cagney & Lacey (1981), as Debby Novotny on Queer as Folk (2000), and as Madeline Westen on Burn Notice (2007).
Acting protégée of Eddie Albert.