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 acquired its more familiar title in syndication.The program was the first weekly, American, live-action television series with a female superhero lead character (debuting September 6, 1975, predating the weekly debuts of both The Bionic Woman (January 14, 1976), and, Wonder Woman (April 21, 1976)).