The first season of Shameless, an American comedy-drama television series based on the British series of the same name by Paul Abbott, premiered on January 9, 2011, at Sunday 10:00 p.m. EST on the Showtime television network. Executive producers are John Wells, Paul Abbott and Andrew Stearn, with producer Michael Hissrich. The season concluded after 12 episodes on March 27, 2011. The show's season premiere was watched by 982,000 viewers, making it the network's biggest turnout for a series premiere since Dead Like Me in 2003. The episode airing January 30, "Casey Casden", received 1.45 million total viewers, making Shameless the best performing first-year drama on Showtime. The season finale scored 1.16 million viewers.