The Vampire Diaries O Come, All Ye Faithful (2009–2017) Online
Now that the hybrids have finally excruciatingly completed their siring therapy, Tyler takes goodbyes, being prepared to sacrifice the coming year or so as 'host' body for Klaus to be locked in and buried. Conflict threatens as Stefan demands the plan be at least postponed until Klaus has helped him with the vampirism antidote for Elena. That proves void as Caroline thinks of using Rebekah's secretly stored corpse as host and Professor Atticus demonstrates he can get the cure even faster, knowing which male witch must be dug up for it. Atticus's method to control Jeremy's vampire-chaser instinct fails because his love for Elena isn't unconditional enough, but Damon solves that by using Bonnie. Damon cancels his sire hold on Elena, despite her hesitation, but Stefan just learned about and and gets lividly furious. Klaus crosses all vampire and hybrid plans by carrying out a bloody ritualistic deal struck with Atticus and April.
| Episode cast overview, first billed only: | |||
 | Nina Dobrev | - | Elena Gilbert |
 | Paul Wesley | - | Stefan Salvatore |
 | Ian Somerhalder | - | Damon Salvatore |
 | Steven R. McQueen | - | Jeremy Gilbert |
 | Kat Graham | - | Bonnie Bennett |
 | Zach Roerig | - | Matt Donovan |
 | Candice King | - | Caroline Forbes (as Candice Accola) |
 | Michael Trevino | - | Tyler Lockwood |
 | Joseph Morgan | - | Klaus Mikaelson |
 | Claire Holt | - | Rebekah Mikaelson |
 | Susan Walters | - | Carol Lockwood |
 | Gracie Gillam | - | April Young (as Grace Phipps) |
 | Phoebe Tonkin | - | Hayley Marshall |
 | David Alpay | - | Atticus Shane |
 | Alyssa Diaz | - | Kim |
Last living appearance of Carol Lockwood.