Special Guest Star
- Antagonists: Kai and Cade.
- Arcadius is killed by Stefan.
- Kai was able to absorb magic from the Armory's walls similarly to how Lizzie and Josie were subconsciously absorbing it and levitating crayons in The Lies Will Catch Up To You.
- Alaric tells Caroline that he would like to start a school for children, like Josie and Lizzie, at The Armory.
- With Bonnie's help, Josie and Lizzie managed to create a new Prison World for Kai, there is also no way for him to escape this world either.
- Bonnie tells Damon what Kai told her about Hell; that it was not destroyed after Cade's death and that someone they know is now in charge.
- Katherine became the new "Queen" of Hell.
- This episode confirms that Katherine was in fact sucked into and has been in Hell since her demise.
- This is also the final episode of the show not to feature all the main characters.
- This is the fourth and final episode this season to not feature Matt.
- Damon Salvatore - Staked; killed by himself (temporarily)
- Arcadius - Stabbed by his dagger; killed by Stefan
- Mystic Falls, Virginia
- Enzo's Safehouse
- Grove Hill, Virginia
- Bar (present and Prison World)
- Jo was mentioned by Caroline. She was last seen in Best Served Cold as a corpse.
- Elena was briefly seen in this episode. Her last brief appearance was in Things We Lost in the Fire.
- Katherine was mentioned by several characters. She was last seen as a hallucination in While You Were Sleeping.
Behind the Scenes
- "It's been a hell of a ride" is a line from Damon to Elena in season one's Blood Brothers.
- Hashtag during the airing was #KillTheDevil
- "Hello, Clarice" is a reference to The Silence of the Lambs, a film about a serial killer Hannibal Lecter.