Music used in the scenes about Dr. Charles Montgomery in this episode and in #1.3 Murder House is from the original score of Bram Stoker's Dracula (1992) by Wojciech Kilar.
Patrick says, "Have another drink, dear," to Chard; and then to Vivien he says, "Crafting brings out his inner George and Martha." George and Martha are the drunken, embittered couple featured in that movie.