The Trials of Rosie O'Neill is an American drama television series which aired on CBS from September 17, 1990 to May 30, 1992. The show stars Sharon Gless as Fiona Rose "Rosie" O'Neill, a lawyer working in the public defender's office for the City of Los Angeles. The show marked the return of Gless to series television after her run on Cagney & Lacey.