Haycorn Smith and the Castle Ghost

A boy is in danger when he stumbles upon a crime committed by two prominent men of his town, but finds an unusual ally in the form of a castle ghost.
Twelve-year-old Haycorn may know all about ghosts of Ohio, but even he is stunned when he and his friend Budge encounter a ghost in a castle.
The boys witness a clandestine meeting there between two men involving a kick-back scheme, putting their lives, and that of Haycorn's mother, in jeopardy.
But the ghost may have other plans for all of them.