28 Books: - Nancy Drew Mystery Stories Set - The Secret of the Old Clock, The Hidden Staircase, The Bungalow Mystery, The MYstery at Lilac Inn, The Secret at Shadow Ranch, The Secret of Red Gate Farm, The Clue in the Diary + 19 More (Series Set Collection, Vol. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)