The Thin Man recites a passage from "The Second Coming" and incorrectly attributes the poem to Emily Dickinson. Courtney correctly attributes the poem to William Butler Yeats.
Courtney quotes Thomas Kempis when she tells Matt, "Occasions do not make a man strong or weak but they show what he is."
One of the songs playing on the radio in the beginning is "You're Pretty" performed by J.D. Driskill who portrays Matt in the film.
As Courtney flips the dial, a news reporter can be heard saying, "The killer is still on the loose." This sets up the fact that the Thin Man has been doing these crimes for some time, and also explains how Courtney knew about him.
Buddy Chambers attributes that the character of Courtney is heavily influenced by Sarah Polley's portrayal of Ronna in the film, "GO".