This episode was the first holiday episode of the series. After this, TVD began to do holiday episodes more frequently in the second half of the series.
This is the final episode of the second chapter of Season Four, The Hunter Chapter.
This is the last episode set in 2010 which started in the season one midseason premiere A Few Good Men, a span of exactly 60 episodes.
The title card at the end of the episode had a snowflake falling instead of the usual falling drop of blood.
The title of the episode is the first verse of the English translation of the Christmas carol Adeste Fideles