The two boats fastened to the little pier that jutted out from the garden lay rocking in its shadow. Here and there lighted windows showed through the thick mist on the margins of the lake. The Enghien Casino opposite blazed with light, though it was late in the season, the end of September. A few stars appeared through the clouds. A light breeze ruffled the surface of the water.

Arsene Lupin left the summer-house where he was smoking a cigar and, bending forward at the end of the pier:

"Growler?" he asked. "Masher?... Are you there?"

A man rose from each of the boats, and one of them answered:

"Yes, governor."

"Get ready. I hear the car coming with Gilbert and Vaucheray."

He crossed the garden, walked round a house in process of construction, the scaffolding of which loomed overhead, and cautiously opened the door on the Avenue de Ceinture. He was not mistaken: a bright light flashed round the bend and a large, open motor-car drew up, whence sprang two men in great-coats, with the collars turned up, and caps.

It was Gilbert and Vaucheray: Gilbert, a young fellow of twenty or twenty-two, with an attractive cast of features and a supple and sinewy frame; Vaucheray, older, shorter, with grizzled hair and a pale, sickly face.

"Well," asked Lupin, "did you see see him, the deputy?"

"Yes, governor," said Gilbert, "we saw him take the 7.40 tram for Paris, as we knew he would."

"Then we are free to act?"

"Absolutely. The Villa Marie-Therese is ours to do as we please with."

The chauffeur had kept his seat. Lupin gave him his orders:

"Don't wait here. It might attract attention. Be back at half-past nine exactly, in time to load the car unless the whole business falls through."

Why should it fall through?" observed Gilbert.

The motor drove away; and Lupin, taking the road to the lake with his two companions, replied:

"Why? Because I didn't prepare the plan; and, when I don't do a thing myself, I am only half-confident."

"Nonsense, governor! I've been working with you for three years now... I'm beginning to know the ropes!"

"Yes, my lad, you're beginning," said Lupin, "and that's just why I'm afraid of blunders... Here, get in with me... And you, Vaucheray, take the other boat... That's it... And now push off, boys... and make as little noise as you can."

Growler and Masher, the two oarsmen, made straight for the opposite bank, a little to the left of the casino.

They met a boat containing a couple locked in each other's arms, floating at random, and another in which a number of people were singing at the top of their voices. And that was all.

Lupin shifted closer to his companion and said, under his breath:

"Tell me, Gilbert, did you think of this job, or was it Vaucheray's idea?"

"Upon my word, I couldn't tell you: we've both of us been discussing it for weeks."

"The thing is, I don't trust Vaucheray: he's a low ruflian when one gets to know him... I can't make out why I don't get rid of him... "

"Oh, governor!"

"Yes, yes, I mean what I say: he's a dangerous fellow, to say nothing of the fact that he has some rather serious peccadilloes on his conscience."

“What alternative could be conceived?” said I.

“You may well say so. And yet there were one or two points which worried young Edmunds, of the Berkshire Constabulary. A smart lad that! He was sent later to Allahabad. That was how I came into the matter, for he dropped in and smoked a pipe or two over it.”

“A thin, yellow-haired man?”

“Exactly. I was sure you would pick up the trail presently.”

“But what worried him?”

“Well, we were both worried. It was so deucedly difficult to reconstruct the affair. Look at it from the lion’s point of view. He is liberated. What does he do? He takes half a dozen bounds forward, which brings him to Ronder. Ronder turns to fly — the claw-marks were on the back of his head — but the lion strikes him down. Then, instead of bounding on and escaping, he returns to the woman, who was close to the cage, and he knocks her over and chews her face up. Then, again, those cries of hers would seem to imply that her husband had in some way failed her. What could the poor devil have done to help her? You see the difficulty?”

“Quite.”

“And then there was another thing. It comes back to me now as I think it over. There was some evidence that just at the time the lion roared and the woman screamed, a man began shouting in terror.”

“This man Ronder, no doubt.”

“Well, if his skull was smashed in you would hardly expect to hear from him again. There were at least two witnesses who spoke of the cries of a man being mingled with those of a woman.”

“I should think the whole camp was crying out by then. As to the other points, I think I could suggest a solution.”

“I should be glad to consider it.”

“The two were together, ten yards from the cage, when the lion got loose. The man turned and was struck down. The woman conceived the idea of getting into the cage and shutting the door. It was her only refuge. She made for it, and just as she reached it the beast bounded after her and knocked her over. She was angry with her husband for having encouraged the beast’s rage by turning. If they had faced it they might have cowed it. Hence her cries of ‘Coward!’ ”

“Brilliant, Watson! Only one flaw in your diamond.”

“What is the flaw, Holmes?”

“If they were both ten paces from the cage, how came the beast to get loose?”

“Is it possible that they had some enemy who loosed it?”

“And why should it attack them savagely when it was in the habit of playing with them, and doing tricks with them inside the cage?”

“Possibly the same enemy had done something to enrage it.”

Holmes looked thoughtful and remained in silence for some moments.

“Well, Watson, there is this to be said for your theory. Ronder was a man of many enemies. Edmunds told me that in his cups he was horrible. A huge bully of a man, he cursed and slashed at everyone who came in his way. I expect those cries about a monster, of which our visitor has spoken, were nocturnal reminiscences of the dear departed. However, our speculations are futile until we have all the facts. There is a cold partridge on the sideboard, Watson, and a bottle of Montrachet. Let us renew our energies before we make a fresh call upon them.”