Danny: "Whoa, who's on first here, huh?" As Danny and Detective Angell are inquiring a neighbor about the tenant of the apartment where the woman died, there's a confusion about that person's identity. Each answer the neighbor gives gets the detectives more confused, until Danny alludes to "Who's on first?", a comedy routine around baseball players with double-meaning names that was made famous by Abbott and Costello, Bud Abbott and 'Lou Costello', and has been mentioned in a number of shows and movies.
Ashley Jones was, at the time, the wife of C.S.I. New York researcher and writer Noah Nelson and the daughter-in-law of recurring actor Craig T. Nelson who portayed newspaper magnate Robert Dunbrook in the fifth season.