Title: The black stallion's Mystery
Description: 13th in the Black Stallion series.

Alec and Henry go to Spain to track down Black's sire, who may alive after all. They also travel to Arabia, where they are asked to help with the mystery of a ghost horse.
Subjects: Fiction, Horses, Juvenile fiction, Mystery and detective stories, Children's stories, Horses, fiction, Black stallion (fictitious character), fiction, Mystery fiction, Children's fiction, Factor analysis, Psychometrics