When Thing hands Gomez the money, he is a left hand, instead of his usual right. When he hands Mr. Hulen a pistol and then some hemlock whiskey, he is also a left.
When Lurch plays the harpsichord at the beginning, the movement of his fingers does not match the music that is heard.
Ralph J. Hulen attributes the quote "Gambling is a disease of barbarians" to William Shakespeare, twice. But it was actually said by the American playwright William Inge.