After a lengthy hiatus, The Vampire Diaries Season 5 returns with a new episode tonight.
It looks to be an interesting return installment, with Katherine out to seduce Stefan and Damon out to resist feeding on Enzo.
But before we look too far ahead, let's take a look back, shall we?
This is a series that has excelled at flashing back to old day (sometimes really old days) in order to surprise viewers with new character information. How did Damon get turned? How did Rebekah come into the picture?
Go back and watch The Vampire Diaries online to relive some of these great installments and see if you agree below with our ranking of the Top 9 Flashback Episodes in TVD history: