The Professor and the Puzzle — Carolyn Keene

Nancy and her friends are on an epic quest to discover the identity of a treacherous Greek scholar in this fifteenth book of the Nancy Drew Diaries, a fresh approach to the classic mystery series.

Nancy, Bess, and George are excited to attend Oracle College's annual Greek mythology themed gala. But the festive sprit turns troubled when a student falls from the balcony mid-speech. Nancy's investigations quickly reveal this was a case of collegiate sabotage. Can she find the campus menace before someone else gets hurt?