Gosick Episode 13 English Dubbed Episode Title:A Fool Designates His Own Mouthpiece.Episode Description:Kujo and Avril explore one of the school's towers and Avril figures that it is related to the legend of Leviathan, an alchemist who lived there decades before. Victorique stumbles on a pop-up book containing a cryptic message allegedly from Leviathan himself and when a death occurs at the top of the tower, she decides to investigate by herself.