A cache of stolen gold, a dangerous ghost seeking revenge, and a promise that's too valuable to break. These are the surprises awaiting city boy Joe when he spends the school holidays with his grandparents in the Scottish highlands.

A cache of stolen gold, a dangerous ghost seeking revenge, and a promise that's too valuable to break. These are the surprises awaiting city boy Joe when he spends the school holidays with his grandparents in the Scottish highlands.