1890, in a manor in the English countryside. Henry Worthington, the patriarch of the family, as respected as he is feared, discovers the lifeless body of Mary, one of his servants; she had been strangled. The inspector in charge of the case swiftly concludes that the crime was committed by a prowler. Unconvinced by this hasty investigation, Henry decided to call for help from his nephew, Stuart Spencer, the illegitimate son of his sister Violet. Although...