I can remember the theme music to this show. My parent wouldn't let me watch it, but I just remember hearing a deep voice say "THE F B I"

This was a favorite TV show of mine. Efrem Zimbalist Jr. was great as the hard working, tireless agent for J.Edgar Hoover's finest. He goes out and solves Federal Offense and in the end he drives the latest cars from Ford Motor Company(A corporate sponsor and product tie-in).