A "red herring", besides being a fish, is also a distraction from the truth or a false clue. Finding a cake at the end of a rainbow to lead us to a special lure to catch a red herring ............ Im probably wrong here but im getting a lot of "The cake is a lie" vibes from the clue ghost lady gave us. A red herring is basically a lie, and we're looking for a cake to find a lie, so the cake is a lie? Ugh, my brain hurts. Im probably wrong anyways.