Sharon Marguerite Gless (born May 31, 1943) is an American character actress of stage, film and television, who is best known for her roles as Maggie Philbin on Switch (1975–1978), as Sgt. Christine Cagney in the police procedural drama series Cagney & Lacey (1982–1988), as Debbie Novotny in the Showtime cable television series Queer as Folk (2000–2005), and as Madeline Westen on Burn Notice (2007–2013). Gless has won two Emmy Awards and has received 10 Emmy nominations.