The Vampire Diaries is a television series on CW.
Chris Wood (actor) . He is known for his role as Malachai `` Kai '' Parker in the sixth season of the CW Network 's television series The Vampire Diaries in 2014 , after previously appearing on The CW 's The Carrie Diaries in the role of writer Adam Weaver in 2013 . 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 .