Carolyn Keene

A group of professional detectives challenge Nancy to tackle a mystery that they have failed to solve: find an invaluable message hidden by a missionary centuries ago in a hollow oak tree in Illinois. While searching the woods for the ancient tree, Nancy and her friends live with a group of young archaeologists who …

The Mystery At Lilac Inn is the fourth volume in the Nancy Drew Mystery Stories series. It was first published in 1931 under the pseudonym Carolyn Keene. Mildred Wirt Benson was the ghostwriter for the 1931 edition. In 1961, Harriet Stratemeyer Adams extensively revised the novel, creating a completely different …

The Mystery at the Ski Jump is the twenty-ninth volume in the Nancy Drew Mystery Stories series. It was first published in 1952 under the pseudonym Carolyn Keene. The actual author was ghostwriter Alma Sasse.