Based around four women working at the brand-new National Telephone Company in 1920s Madrid, this series follows Lidia, Carlota, Ángeles, and Marga as they discover new talents, find their voices, and overcome their own private tragedies. Boasting incredible acting and awesome costuming, this show has flown under the radar for far too long, and since the fourth season just dropped, you have plenty of episodes to binge.