Without letting the tightly-kept secret plotline slip, Lucy, dressed as
Daisy Buchanan from The Great Gatsby
, reveals the episode "reminds [her] of the game Clue
." She says, "Last Halloween episode, it was a pretty big deal, but they are pulling out all the stops for this one. They're building things and we took over a whole new stage because usually we have two stages, but this is a new stage and they're building a train because the party takes place on a train and things start to happen on this train."