Mary says in voiceover: "I really wanted to turn around and pop off one of those Columbo questions -- you know, the innocuous afterthought that lets the killer know that I know he did it: [imitating Peter Falk]: 'Excuse me, do you always where white shoes after Labor Day?'"
In order to deceive a suspect, Mary adopts a sexy voice on the telephone and says her name is Nomi, then afterward she explains that she got the name from "Showgirls".