What could I do further?

He professed to be equally mystified with myself regarding my wife’s disappearance, declaring his readiness and anxiety to assist me if it were possible.

Then, in the falling twilight, we slowly descended the road together, he giving me his address in the Via Tordinona, a side street close to the Bridge of Sant’ Angelo, which I noted on my shirt-cuff. At the Porto del Popolo we parted, and I returned to the hotel to dine with Gwen, whom I found awaiting me in feverish expectation. I told her briefly of my meeting with a man I knew, but explained nothing of his connection with the house in Sussex Place, nor of the secret tragedy that had been enacted.

Next day was the fifth of February, the day of Santa Agata. How well I recollect it, for at noon we bade farewell to the Eternal City, and as the train roared on across those wide, dreary marshes of the Maremma on our journey northward, I sat in the corner of the compartment and made up my mind to go direct and seek Ethelwynn, the girl whom I had seen dead, and who was yet alive.

I recalled all Antonio’s ominous statements; how that he had expressed a doubt whether the professor’s assassin would ever be brought to justice, and how he had threatened that, if I betrayed the truth to the police, I should never again meet Mabel alive. Did not those words of his conclusively prove complicity in the affair? Why did he command my silence at peril of my dear wife’s life. He had lied when he told me that he was ignorant of her whereabouts; but if he were the actual assassin, or even one of the accomplices, I saw that I could hope for no assistance from him. It was that conclusion which caused me to resolve to invoke the aid of the girl whom I had seen lying upon the floor, cold and lifeless.

From Rome to Broadstairs is a far cry, but two days later we alighted at Victoria, and on the morning of the third day I found myself at the door of a pretty newly-built red-roofed house standing in its own ground high upon the cliffs between the Grand Hotel at Broadstairs and Dumpton Gap.

A neat maid opened the door, and, on inquiring for Miss Greer, I was shown across a square, ample hall to a small cosy sitting-room overlooking the sea, facing direct upon the treacherous Goodwins.

The maid who took my card returned to say that her mistress would be with me in a few moments. And then I stood at the window, gazing along at the quaint old-world harbour of Broadstairs, with “Bleak House” standing high beyond, full of keen anxiety as to the result of the interview.

She came at last, a tall, slim figure, in a dark stuff skirt and cream silk blouse, relieved by a touch of colour at the throat, a sweet-faced, fair-haired, delicate girl, whose large blue eyes wore a look of wonder at the visit of a stranger. She whom I had seen a corpse was certainly alive, and living here in the flesh!

“I must apologise for this intrusion, Miss Greer,” I began, for want of something better to say, “but I may introduce myself as an acquaintance of Mr Langton—an acquaintance under somewhat romantic and curious circumstances.”