A new promo for The Vampire Diaries has just been released and it sees Elena - who is played by Nina Dobrev - waking up to discover that some kind of virus is "inside her head".
Take a look at the video here - and then check out the stills from the episode below!
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So what do you think it means? Are you excited for the next episode? And how will Elena come to terms with recent events despite having no memory?