Pretty much all dramatic American TV shows were shot on film (at 24 fps) before the digital camera era. It's why so many old shows (ex. Star Trek TNG) are now available as HD remasters, they simply go back and rescan the film.
It's more complicated in other countries (the BBC liked to shoot on video a lot) but it was standard practice in the States.
It's more complicated in other countries (the BBC liked to shoot on video a lot) but it was standard practice in the States.