The title is the name of the song that Henry plays for Violet and that Neal used to play for Emma.
The label on the hotel door says "Hotel d'Or." Or is the French word for Gold.
Sam Witwer has previously played a character with a dual personality (Davis Bloome/Doomsday) in Smallville (2001).
Henry's family are surprised when they find out he wants to destroy magic. They shouldn't have been since he tried to do it before.
Sam Witwer starred in the US version of Being Human (2011). Amy Manson starred in the original UK version of Being Human (2008).