Ringer is an American television series that initially aired on The CW from September 13, 2011 to April 17, 2012.[2][3] The series stars Sarah Michelle Gellar, who plays twin sisters Bridget Kelly and Siobhan Martin.[4] On May 13, 2011, it was reported that the project had been picked up to series by The CW.[5] On October 12, 2011, The CW ordered a full first season of 22 episodes.[6]