Grace Russell is mentioned. She was last seen in the Season 5 finale, "The Graduation".
This episode marks one year since the events of "The Forever Tree: Part 2".
Cassie gifts Sam the original handwritten lyrics "Baby I'm Amazed" signed by Paul McCartney. The song that plays during the final scene of the episode is a cover of, Everything She Does Is Magic, by Sleeping At Last.
Sam, after a slew of ideas, recreates the moment he and Cassie met. The scene is almost an exact parallel to the events of, "Starting Over...Again".