Join Nancy Drew in “Secret at Mystic Lake” (ISBN: 9781481400121) as she celebrates George’s birthday with a scenic bike tour. Their nature escape turns thrilling when supplies vanish, a tour guide disappears, and tires are slashed. Can Nancy solve the mystery before they’re lost forever? Experience a fresh take on the classic series with this suspenseful sixth book of the Nancy Drew Diaries by Carolyn Keene.