The show ran for seven seasons on ABC in the United States and various other networks abroad from 1985 to 1992. The series was filmed in Los Angeles during seasons one, two and seven, and in Vancouver during seasons three through six. The show's final episode aired on April 25, 1992 on ABC (the network aired a previously unseen episode for the first time on May 21, 1992, but it was originally intended to air before the series finale).