Goldman, Eric (May 19, 2011). "CW: Nikita to Fridays, Sarah Michelle Gellar's Ringer on Tuesdays". Gorman, Bill (May 13, 2011). "Thursday Final Ratings: "American Idol", "Big Bang", "Community", "Rules", "Mentalist", "Office", "Vampire Diaries" Adjusted Up "Bones" Adjusted Down". On May 9, 2013 The CW renewed the sequence for a shortened fourth and last period.