Lord Tarlton, an influential politician and businessman, lives with his wife in an old, fairly gloomy castle. As an ardent spiritualist, evenings often tries in the castle tower contact with beings from other worlds. One such attempt ends tragically for him: the morning of his young and beautiful wife, Lady Sylvia, finds him dead. After the death of his legal adviser Lord Morton Hadlock, Sherlock Holmes delivers a letter written by Tarlton long before his death, in which the Lord, fearing death at the hands of one of his many political and business enemies famous detective asks for clarification of the mystery of his death. Want to have even a posthumous satisfied that the offender will not remain unpunished. Sherlock Holmes goes in the company of Dr. Watson to the castle Tarlton, assists with the reading of the will of the deceased, and then decides to spend a single night in the castle tower, where the Lord ended life, even though he knows that for him it can end tragically. He hath lighted a candle, sits back in his chair. Soon loses consciousness. Meanwhile, Dr. Watson, famed foreboding, he begins to worry about him.
—Butterbaugh