第12話: 絶望と殺人が蔓延る中、苗木が校長のノートから手がかりを探る
2013年9月20日 放送
Naegi no longer questions whether the principal is the mastermind, but if it isn't him, who could it be? He finds the principal's digital notebook, which allows him to find clues that will be imperative in the upcoming trial. (Source: FUNimation)