- This episode will be the mid-season premiere.
- This episode will be show's 100th episode.
- This episode will revolve around Katerina Petrova.
- This episode will have a 'beautiful reunion'.
- 500 Years of Solitude is probably a reference to the book "One Hundred Years of Solitude" by Gabriel Garcia Marquez. In this case it refers to Katherine's time on the run from Klaus.
- Caroline Dries says Stefan will speak to Damon about his breakup with Elena. This may lead to them getting back together.
- "Death is knocking at the window for a TVD Favorite, although it may not be successful"
- The episode will feature a flashback to 19th century.
- Klaus won't be making his trip to Mystic Falls alone.
- Katherine will be in the hospital dying.
- Damon, Elena, Caroline, Bonnie and Jeremy will be toasting to Katherine's eventual death and remembering the most horrible things that she has ever done to them.
- Nadia and Stefan will be the only ones not toasting to Katherine's eventual death.
- Somebody new for Caroline?
The script was finished on October 17, while the filming started on October 28.
There was a party held on the 9th of November where all the TVD and The Originals cast attended.