After everyone has left the house and just before the final break, Samantha is still "drunk" and says "Oh, my, the Kickapoo Joy Juice." This is a reference to the alcoholic drink in the comic strip "Li'l Abner" by Al Capp, who said of the drink: "(it's) a liquor of such stupefying potency that the hardiest citizens of Dogpatch, after the first burning sip, rose into the air, stiff as frozen codfish"
Throughout the series, Serena wears different beauty marks on her left cheek: this time it's a footprint.
The title and story are based upon Alexandre Dumas's book 'The Corsican Brothers' (Les Freres Corses), a novella first published in 1844 and used as a plot for several movies.
Elizabeth Montgomery is credited under her real name in the role of Samantha Stephens. She is credited as Pandora Spocks in her role of Samantha's look-a-like cousin, Serena.
Larry wears a brown and tan striped cardigan, identical to one Darrin has worn in the past.