The Secrets of Isis The Secrets of Isis, originally broadcast as Isis, is an American live-action superhero television series produced by Filmation from 1975 to 1977 for CBS's Saturday morning lineup. The series was renamed The Secrets of Isis in syndication. The program was the first weekly American live-action television series with a female superhero lead character, debuting September 6, 1975, and predating the weekly debuts of both The Bionic Woman (January 14, 1976) and Wonder Woman (April