Sharon Marguerite Gless (born May 31, 1943) is an American actress known for her television roles. She portrayed Maggie Philbin on Switch (1975–78), Sgt. Christine Cagney in the police procedural drama series Cagney & Lacey (1982–88), and played the title role in The Trials of Rosie O'Neill (1990–92). She was Debbie Novotny in the Showtime...