Hartley Manor is a big old handsome house, which Mr Dutters and his daughter have recently moved in to. They were told that within it were 106 portraits of the ancestors of the Decasserat family that had lived in the house but could only count 105. Then Mr Roberts the headman of the church showed them where the missing portrait was hung, hidden behind a secret panel over 300 years ago after its subject died because he had been one of the most infamous monsters who had ever lived and was now known as the Devil Doctor.