The plot focuses on Adam Salton, originally from Australia, who is contacted by his great-uncle, Richard Salton, in 1860 Derbyshire for the purpose of establishing a relationship between these last two members of the family.
The new heir to the Caswall estate (known as Castra Regis or the Royal.
Adam travels to Richard Salton\'s house in Mercia, Lesser Hill, and quickly finds himself at the centre of mysterious and inexplicable occurrences.
His great-uncle wants to make Adam his heir.
The plot focuses on Adam Salton, originally from Australia, who is contacted by his great-uncle, Richard Salton, in 1860 Derbyshire for the purpose of establishing a relationship between these last two members of the family