At one point Chuck tells Sam that she is going to try and find a spell to help with his situation. Alyson Hannigan's character of Willow Rosenberg on Buffy the Vampire Slayer (1997) studied witchcraft.
A poster for the film House of Bones (2010) hangs in the Rings of Saturn shop where Chuck works. Chuck is played by Alyson Hannigan. House of bones stars Charisma Carpenter. Both actresses played key characters on the Buffy the Vampire Slayer (1997) television series.