Living an adventurous life, as he had done, his wits had been sharpened, and his perception had become as keen as that of any detective. Therefore, I had called upon him, under seal of secrecy, to assist me in the investigation of many a mystery.
Knowing his value, I had wired to him to come to Cromer. He arrived when I was out. First, he looked through my traps, folded my trousers and coats, arranged my shirts and ties in order with professional precision, and when I returned, entered my room, saying briefly —
"I'm here, sir."
I threw myself into a chair and told him all that had occurred – of course, under strictest secrecy.
Then I gave him minute instructions as to making inquiries of the servants at the house in the Overstrand Road. A servant can always get useful information from other servants, for there is a freemasonry among all who are employed in domestic capacities.
Therefore, it was with interest that I sat in my room, overlooking the sea, on the following day, and listened to Rayner's report.
In his straw hat, and well-cut grey tweed suit, my man made a very presentable appearance. It was the same suit in which he went out to Richmond with his "young lady" on Sundays.
"Well, sir," he said, standing by the window, "I've managed to get to know something. The gentleman is a Belgian doctor named Paul Arendt. He has the two best rooms in the house and is the only visitor staying there at present. They say he's a bit eccentric; goes out at all hours, but gives lots of money in tips. Seemingly, he's pretty rich."
"Has he had any visitors?" I asked quickly.
"One. Another foreigner. An Italian named Bertini, who rides a motor-cycle."
"Has he been there often?"
"He came last Monday afternoon – three days ago," my man replied.
"Anything else?"
"Well, sir, I managed to make friends with the maidservant, and then, on pretence of wanting apartments myself, got her to show me several rooms in the house in the absence of her mistress. Doctor Arendt was out, too, therefore I took the opportunity of looking around his bedroom. I'd given the girl a sovereign, so she didn't make any objection to my prying about a bit. Arendt is a rather suspicious character, isn't he, sir?" asked Rayner, looking at me curiously.
"That's for you to find out," I replied.
"Well, sir, I have found out," was his quick answer. "In the small top left-hand drawer of the chest of drawers in his room I found a small false moustache and some grease-paint; while in the right-hand drawer was a Browning revolver in a brown leather case, a bottle of strong ammonia, and a small steel tube, about an inch across, with an india-rubber bulb attached to one end."
"Ah!" I said. "I thought as much. You know what the ammonia and rubber ball are for, eh?"
The man grinned.
"Well, sir, I can guess," was his reply. "It's for blinding dogs – eh?"
"Exactly. We must keep a sharp eye upon that Belgian, Rayner."
"Yes, sir. I took the opportunity to have a chat with the maid about the recent affair on the East Cliff, and she told me she believed that the dead man and Doctor Arendt were friends."
"Friends!" I echoed, starting forward at his words.
"Yes, sir. The girl was not quite certain, but believes she saw the Belgian doctor and young Mr. Craig walking together over the golf-links one evening. It was her Sunday out and she was strolling that way just at dusk with her sweetheart."
"She is not quite positive, eh?" I asked.
"No, sir, not quite positive. She only thinks it was young Mr. Craig."
"Did Craig or Gregory ever go to that house while our friend has been there?"
"No, sir. She was quite positive on that point."
"What does the doctor do with himself all day?" I asked.
"Sits reading novels, or the French papers, greater part of the day. Sometimes he writes letters, but very seldom. According to the books I noticed in his room, he delights in stories of mystery and crime."
I smiled. Too well I knew the literary tastes of Jules Jeanjean, the man who was fearless, and being so, was eminently dangerous, and who was passing as a Belgian doctor. He, who had once distinguished himself by holding the whole of the forces of the Paris police at arms' length, and defying them – committing crimes under their very noses out of sheer anarchical bravado – was actually living there as a quiet, studious, steady-going man of literary tastes and refinement – Doctor Paul Arendt, of Liège, Belgium.
Ah! Some further evil was intended without a doubt. Yet so clever were Jeanjean's methods, and so entirely unsuspicious his actions, that I confess I failed to see what piece of chicanery was now in progress.
My next inquiry was in the direction of establishing the identity of the motor-cyclist.
That night Rayner kept watchful vigil instead of myself, for I had been up five nights in succession and required sleep. But though he waited near the house in the Overstrand Road from ten o'clock until four in the morning, nothing occurred. Jeanjean had evidently retired to rest and to sleep.
After that we took it in turns to watch, I having made it right with the night-porter of the hotel, for a pecuniary consideration, to take no notice of our going or coming.
For a whole week the notorious Frenchman did not emerge after he entered the house at dinner-time. I was sorely puzzled regarding the identity of that motor-cyclist. Would he return, or had he left the neighbourhood?
Early one morning Rayner, having taken his turn of watching, returned to say that Bertini, with his motor-cycle, had again met the "foreign gentleman" at the railway bridge – the same spot at which I had seen them meet.
They had remained about half an hour in conversation, after which the stranger had mounted and rode away again on the Norwich road, while Jeanjean had returned to his lodgings.
My mind was then made up. That same morning I took train to Norwich, where I hired a motor-car for a fortnight, and paying down a substantial deposit, drove the car – an open "forty," though a trifle old-fashioned – as far as Aylsham, a distance of ten miles, or half-way between Norwich and Cromer. There I put up at a small hotel, where I spent the rest of the day in idleness, and afterwards dined.
Aylsham is a sleepy little place, with nothing much to attract the visitor save its church and ancient houses. Therefore, I devoted myself to the newspapers until just before the hotel closed for the night.
Then I rang up Rayner on the telephone as I had made arrangement to do.
"That's me, sir," was his answer to my inquiry.
"Well," I asked, "anything fresh?"
"Yes, sir. A lady called to see you at seven o'clock – a young French lady. I saw her and explained that you were away until to-morrow, and – "
"Yes, yes!" I cried eagerly. "A French lady. Did she give her name?"
"No, sir. She only told me to tell you that if I mentioned the word 'nightingale,' you would know."
"The Nightingale!" I gasped, astounded. It was Lola! And she had called upon me!
"When is she coming back?" I demanded eagerly.
"She didn't say, sir – only told me to tell you how sorry she was that you were out. She had travelled a long way to see you."
"But didn't she say she'd call back?" I demanded, full of chagrin that I should have so unfortunately been absent.
"No, sir. She said she might be able to call sometime to-morrow afternoon, but was not at all certain."