The Secret of Shadow Ranch

The Secret of Shadow Ranch by Carolyn Keene is 175 pages.  It is a Nancy Drew book.  Nancy goes to Arizona to visit her friends Bess and George.  They tell her a there is a mystery at the ranch.  A mysterious ghost horse keeps showing up at the ranch and whenever it does, something bad happens later.  Nancy also learns from someone else that there is treasure involved.  Then a strange man drops a warning into Nancy's car.  Afterwards, Bess and George introduce Nancy to Alice whose father has been kidnapped.  Then Alice sees a drawing and insists that it is done by her father.  Nancy and her friends discover a cabin and think that it is the secret hideout of the kidnappers who took Alice's dad.  She also believes that the kidnappers are the one causing trouble at the ranch.