The Black Stallion's Ghost (Knight Books)

The Black Stallion's Ghost is the seventeenth book in Walter Farley's Black Stallion series. In this novel, Alec Ramsay and his horse, the Black, venture into the Florida Everglades for a peaceful retreat. During their stay, they encounter a mysterious man riding a ghostly gray mare. Alec's initial curiosity turns to concern as he realizes the man teeters on the brink of insanity. This meeting propels Alec and the Black into a perilous chase through the treacherous landscapes of the Everglades, where danger lurks at every turn.