“It only remains to indicate the part which she had played throughout. There can be no doubt that Stapleton exercised an influence over her which may have been love or may have been fear, or very possibly both, since they are by no means incompatible emotions. It was, at least, absolutely effective. At his command she consented to pass as his sister, though he found the limits of his power over her when he endeavoured to make her the direct accessory to murder. She was ready to warn Sir Henry so far as she could without implicating her husband, and again and again she tried to do so. Stapleton himself seems to have been capable of jealousy, and when he saw the baronet paying court to the lady, even though it was part of his own plan, still he could not help interrupting with a passionate outburst which revealed the fiery soul which his self-contained manner so cleverly concealed. By encouraging the intimacy he made it certain that Sir Henry would frequently come to Merripit House and that he would sooner or later get the opportunity which he desired. On the day of the crisis, however, his wife turned suddenly against him. She had learned something of the death of the convict, and she knew that the hound was being kept in the outhouse on the evening that Sir Henry was coming to dinner. She taxed her husband with his intended crime, and a furious scene followed in which he showed her for the first time that she had a rival in his love. Her fidelity turned in an instant to bitter hatred, and he saw that she would betray him. He tied her up, therefore, that she might have no chance of warning Sir Henry, and he hoped, no doubt, that when the whole countryside put down the baronet’s death to the curse of his family, as they certainly would do, he could win his wife back to accept an accomplished fact and to keep silent upon what she knew. In this I fancy that in any case he made a miscalculation, and that, if we had not been there, his doom would none the less have been sealed. A woman of Spanish blood does not condone such an injury so lightly. And now, my dear Watson, without referring to my notes, I cannot give you a more detailed account of this curious case. I do not know that anything essential has been left unexplained.”

“He could not hope to frighten Sir Henry to death as he had done the old uncle with his bogie hound.”

“The beast was savage and half-starved. If its appearance did not frighten its victim to death, at least it would paralyze the resistance which might be offered.”

“No doubt. There only remains one difficulty. If Stapleton came into the succession, how could he explain the fact that he, the heir, had been living unannounced under another name so close to the property? How could he claim it without causing suspicion and inquiry?”