Before he broke through as Thomas Magnum in "Magnum, P.I.," Selleck played James Robertson in "Daughters of Satan," a horror film that saw the young actor in his first leading role. The movie itself has been long forgotten, but it's well worth a watch over on Tubi, not only because it's Selleck's first time as star, but because it's equally hilarious and dark. "Daughters of Satan" is directed by Hollingsworth Morse, who's best known for his prolific TV directing career. Throughout the 1970s, Selleck starred in commercials and bit parts while working his way towards stardom. By the end of the decade, he secured a recurring role as private investigator Lance White in "The Rockford Files," before finally debuting in "Magnum, P.I."