"What's the matter?" asked Perenna.

"I'm frightened! I'm frightened!" he said.

"This is madness!" cried Don Luis. "Aren't we here, the two of us? We can easily spend the night with you, if you prefer, by your bedside."

Fauville replied by shaking Perenna violently by the shoulder, and, with distorted features, stammering:

"If there were ten of you--if there were twenty of you with me, you need not think that it would spoil their schemes! They can do anything they please, do you hear, anything! They have already killed Inspector Verot--they will kill me--and they will kill my son. Oh, the blackguards!

My G.o.d, take pity on me! The awful terror of it! The pain I suffer!"

He had fallen on his knees and was striking his breast and repeating:

"O G.o.d, have pity on me! I can't die! I can't let my son die! Have pity on me, I beseech Thee!"

He sprang to his feet and led Perenna to a gla.s.s-fronted case, which he rolled back on its bra.s.s castors, revealing a small safe built into the wall.

"You will find my whole story here, written up day by day for the past three years. If anything should happen to me, revenge will be easy."

He hurriedly turned the letters of the padlock and, with a key which he took from his pocket, opened the safe.

It was three fourths empty; but on one of the shelves, between some piles of papers, was a diary bound in drab cloth, with a rubber band round it.

He took the diary, and, emphasizing his words, said:

"There, look, it's all in here. With this, the hideous business can be reconstructed.... There are my suspicions first and then my certainties.... Everything, everything ... how to trap them and how to do for them.... You'll remember, won't you? A diary bound in drab cloth.... I'm putting it back in the safe."

Gradually his calmness returned. He pushed back the gla.s.s case, tidied a few papers, switched on the electric lamp above his bed, put out the lights in the middle of the ceiling, and asked Don Luis and Mazeroux to leave him.

Don Luis, who was walking round the room and examining the iron shutters of the two windows, noticed a door opposite the entrance door and asked the engineer about it.

"I use it for my regular clients," said Fauville, "and sometimes I go out that way."

"Does it open on the garden?"

"Yes."

"Is it properly closed?"

"You can see for yourself; it's locked and bolted with a safety bolt.

Both keys are on my bunch; so is the key of the garden gate."

He placed the bunch of keys on the table with his pocket-book and, after first winding it, his watch.

Don Luis, without troubling to ask permission, took the keys and unfastened the lock and the bolt. A flight of three steps brought him to the garden. He followed the length of the narrow border. Through the ivy he saw and heard the two policemen pacing up and down the boulevard. He tried the lock of the gate. It was fastened.

"Everything's all right," he said when he returned, "and you can be easy.

Good-night."

"Good-night," said the engineer, seeing Perenna and Mazeroux out.

Between his study and the pa.s.sage were two doors, one of which was padded and covered with oilcloth. On the other side, the pa.s.sage was separated from the hall by a heavy curtain.

"You can go to sleep," said Perenna to his companion. "I'll sit up."

"But surely, Chief, you don't think that anything's going to happen!"

"I don't think so, seeing the precautions which we've taken. But, knowing Inspector Verot as you did, do you think he was the man to imagine things?"

"No, Chief."

"Well, you know what he prophesied. That means that he had his reasons for doing so. And therefore I shall keep my eyes open."

"We'll take it in turns, Chief; wake me when it's my time to watch."

Seated motionlessly, side by side, they exchanged an occasional remark.

Soon after, Mazeroux fell asleep. Don Luis remained in his chair without moving, his ears p.r.i.c.ked up. Everything was quiet in the house. Outside, from time to time, the sound of a motor car or of a cab rolled by. He could also hear the late trains on the Auteuil line.

He rose several times and went up to the door. Not a sound. Hippolyte Fauville was evidently asleep.

"Capital!" said Perenna to himself. "The boulevard is watched. No one can enter the room except by this way. So there is nothing to fear."

At two o'clock in the morning a car stopped outside the house, and one of the manservants, who must have been waiting in the kitchen, hastened to the front door. Perenna switched off the light in the pa.s.sage, and, drawing the curtain slightly aside, saw Mme. Fauville enter, followed by Silvestre.

She went up. The lights on the staircase were put out. For half an hour or so there was a sound overhead of voices and of chairs moving. Then all was silence.

And, amid this silence, Perenna felt an unspeakable anguish arise within him, he could not tell why. But it was so violent, the impression became so acute, that he muttered:

"I shall go and see if he's asleep. I don't expect that he has bolted the doors."

He had only to push both doors to open them; and, with his electric lantern in his hand, he went up to the bed. Hippolyte Fauville was sleeping with his face turned to the wall.

Perenna gave a smile of relief. He returned to the pa.s.sage and, shaking Mazeroux:

"Your turn, Alexandre."

"No news, Chief?"

"No, none; he's asleep."

"How do you know?"

"I've had a look at him."

"That's funny; I never heard you. It's true, though, I've slept like a pig."

He followed Perenna into the study, and Perenna said:

"Sit down and don't wake him. I shall take forty winks."