Cate Cain - The Jade Boy [Kindle azw3]

Sorcery and mystery with a dose of horror and history. Eleven-year old Jem Green works as a kitchen boy in the London household of a powerful Duke. He doesn't know who his father is and his life consists of never ending drudgery. But when the sinister Count Cazalon pays a visit to the Duke, Jem's world is turned upside down. The count is planning something terrible and Jem appears to be central to his wicked scheme. With the help of newfound friends...