“Before we make an arrest our clues are secret,” the inspector said, not unkindly. “By divulging any of them the ends of justice may be defeated. All I can tell you at present is, that we held a warrant for the arrest of that lady whose portrait adorns our collection, and it was not executed, for the reason stated below it in red ink.”

“Because she died. Yes; I am aware of it,” I said. “I was present when she breathed her last, when the police burst into this house, and when they retired on finding the person ‘wanted’ was no longer alive. But for what offence was that warrant issued? Surely I, her husband, have a right to know?”

“I regret, Mr Ridgeway, I am unable to tell you,” he replied evasively. “You must be well aware that I was abroad at the time, and the warrant, therefore, did not pass through my hands.”

I saw in this a polite refusal to give me the information I sought, and was piqued in consequence. Soon we descended the stairs to the room where Dora remained, still uttering incoherent sentences, and after consultation the two police officers called a cab, and having placed the unfortunate girl in it we all drove to Lady Stretton’s, the inspector having first taken the precaution to send to the nearest police station for a “plain-clothes man” to mount guard over the house wherein the body of the murdered man was lying.

Our arrival at Lady Stretton’s caused the greatest consternation among the servants, her ladyship, and her two lady visitors. Lady Stretton herself fainted, the family doctor, a noted mental specialist, was quickly summoned, and Dora taken to her room. From the servants I gathered that Dora had only been absent from home for two days, and that very little anxiety had been felt on her account, for it was believed that having had some disagreement with her mother, and having announced her intention of visiting some friends in Yorkshire, she had gone thither.

It was, however, a most severe blow to all when she returned in the custody of two police officers a raving lunatic.

The doctor, who could obtain no rational reply to any of his questions, summoned another great specialist on mental ailments, who quickly pronounced the case as extremely grave, but not altogether incurable. Insanity of the character from which she was suffering frequently, he said, took a most acute form, but he was not without hope that, with careful and proper treatment, the balance of her mind might again be restored. The family were instructed not to allow, on any account, any question to be put to her regarding the manner in which the attack had commenced. The strain of endeavouring to recollect would, the doctor assured us, do her incalculable harm.

Grindlay remained with me at Lady Stretton’s for an hour or more, and when we left we drove together as far as my chambers, where I alighted, while he went on to Scotland Yard.

“Remember,” he said, before I wished him good-night, and promised to see him on the morrow, “not a word to a soul that we have discovered the body. Only by keeping our own counsel, and acting with the greatest discretion and patience, can we arrest the guilty one.”

“Grindlay, you suspect my friend, Captain Bethune,” I said. “It’s useless to deny it.”