While Parsley gives Gunther a much-needed bath, Emmett quizzes the Kadie on things; such as where the otter twins have gotten off to. Gunther notes that they're off playing with dragons as Shrine Maidens.
This leads to Emmett telling of another dragon a physical one that attacked Stonebarrow about when the Akwavi arrived, but was subdued by the witch of that time and buried or put to sleep. The otter also hints that in order to bury a dragon, Wingnuts must have been involved.
This gives Gunther the idea to raid the archives for information on it.
Further, it's suggested that Dr. Pike's 'screaming Creen' may be involved somehow.