The members of Kyle’s team go to the Young Adult Room. Akimi writes a numbered list in a notebook from one to 12, filling in the titles on the cards and adding the word UNKNOWN for the cards belonging to Charles, Haley, and Andrew. They decide they need the three missing cards or a clue. Kyle asks Miguel what he found in the Arts and Artifacts Room, and Miguel says he saw the original blueprints to the bank building but could not determine an exit.

Kyle explains how to play Bibliomania: Answer a book trivia questions correctly in each of the Dewey Decimal category rooms, earning a book for your bookcase; spin to move and get a new question; once you have a full bookcase, it’s a race to get out. Kyle recognizes that Mr. Lemoncello would have no way to control which card they chose in each room, so making clues would be impossible. Kyle recalls that his mom got new cards for the scavenger hunt game when Kyle and his brothers needed them; Kyle uses his Librarian Consultation lifeline to ask Mrs. Tobin if new cards exist for them—and they do. Now they know that the new cards contain their clues.