The Vampire Diaries was on last night.
The Vampire Diaries . The series premiered on The CW on September 10 , 2009 and concluded on March 10 , 2017 , airing 171 episodes over eight seasons . On April 6 , 2015 , lead actress Nina Dobrev confirmed via Instagram that she and co-star Michael Trevino ( who plays Tyler Lockwood ) would be leaving the show after its sixth season .