This episode introduces Madonna (the wife of Premier Kublai Dutch), Snivel the Pendulant, and The Reaper, the Queen's top assassin.
Doc: That's enough, Nimrod! I want some answers, and I want them now!
Nimrod: Yes, no, sometimes, none of the above.
Doc: Wait until I ask the questions!
Doc: (boarding "The Christie") Well, if it isn't Captain Kidd!
Niko: What shady business do you have on Andor, Captain?
Captain Kidd: Hey, even outlaws go on vacation.
Doc: (as they chase Snivel the Pedulant) Niko, where did he go?
Niko: What, am I psychic?!
The name of the luxury liner, "The Christie", is a tribute to Agatha Christie, the author of Murder on the Orient Express, which is also the source of the title and plot of this episode.