For a second, pale with alarm, Ralph Ansell glanced around the room.

Suddenly an idea suggested itself. He was always resourceful.

Next moment he dashed across to the door and locked it, afterwards rushing to the door which led into the bedroom--the room in which his friend was bathing his wound. There was a bolt upon the door, and this he slipped, thus imprisoning the man who was, as yet, unconscious of danger.

Then, crossing to where Adolphe's jacket hung, he quickly drew out the twenty-five thousand francs in notes and placed them in his own pocket.

He held his breath and listened. As yet, all was quiet, save for a man's rough voice below. He was apparently in conversation with Mme. Brouet's husband.

That was sufficient for Ansell.

Quickly he pushed away the table from the centre of the room, and, kicking aside the j.a.panese gra.s.s-mats, there was revealed in the floor a trap-door with an iron ring in it.

Without more ado he lifted the heavy flap, disclosing the cavernous darkness of a kind of shaft which led to the cellar, whence there was a secret exit into a neighbouring street. Placing his foot upon the first rung of the rickety ladder, he quickly disappeared, closing the flap after him and bolting it from beneath.

Thus Adolphe, robbed and imprisoned by the man he had trusted so implicitly, was left to his fate.

Scarcely had the fugitive, carrying with him the whole of the booty, closed down the flap in the floor when Adolphe, whose hand was very painful and bleeding profusely, suddenly heard the voices below.

He started, crept to the window, and looked cautiously down into the courtyard.

Two men were there--men whom he instantly recognised as police agents in plain clothes.

"The Eel" listened for a second, then dashed to the door to warn Ralph.

He turned the handle, but, to his surprise and dismay, found the door bolted.

"Ralph! Ralph!" he cried. "Are you there? Quick! Let me in! The police!"

There was no response.

"Ralph!" he repeated. "Quick! The police are below!"

And he tugged frantically at the door. But it was securely fastened.

He was caught--like a rat in a trap!

Bending, he peered through the keyhole, surprised to discover that the table had been moved. He could see, too, that the matting had been cast aside, revealing the trap-door. That house had long been the abode of thieves. Bonnemain himself had lived in those same rooms for six years, and he had had the secret exit constructed. More than once it had been used, and the fugitive escaped by that secret way.

In a moment the grim truth flashed across Adolphe's mind. Ansell had for some reason bolted the door, and had forgotten to unlock it before escaping.

But why had he not warned him?

The voices outside were now raised, and he could hear the tramp of several other men over the moss-grown stones of the weedy courtyard.

Not a second was to be lost; therefore, taking up one of the rush-bottomed chairs and raising it above his head, he advanced to the door and brought it down with a crash upon the panel just over the lock.

A great crack showed, and by a second heavy blow the panel gave way sufficiently to allow him to insert his hand and draw the bolt from the opposite side.

He dashed across the living-room to where his coat hung, in order to seize his portion of the booty. Quickly he searched the pockets, but in vain!

The notes were gone!

Then, for the first time, he realised that he had been robbed, and from his dry lips there fell a fierce vow of vengeance against the man whose willing tool he had been--the man whose wife had left him because of his callous brutality.

Twice he searched his pockets, then he cast his coat from him in despair and, bending to the floor, tugged at the iron ring.

That, too, was secured. He could not lift it because the scoundrel had bolted it from beneath. Not only had he stolen his money, but he had made him a prisoner, knowing that he must fall into the hands of the police.

With his long, black hair ruffled, his great, dark eyes starting from their sockets, and both fists clenched in desperation, he gazed wildly around for some means of escape. There were none. Heavy footsteps sounded upon the uncarpeted stairs, yet if he attempted to jump from the window he would fall into the arms of the police, who had by this time surrounded the house.

This was Ralph's revenge--because he had taken his poor little wife's part, because he had prevented him from striking her down!

A bitter thought arose in the young thief's heart. He bit his lip, and in an undertone declared:

"If ever I meet the cowardly blackguard I will kill him! That I swear.

Not only has he robbed me, but he has also betrayed me to the police, knowing that I must be sent to prison, while he will remain safe!"

At that instant there came a heavy banging upon the door, while a loud, imperative voice cried:

"We are agents of police. Open--in the name of the law!"

The victim shrank back in terror. It was the end of his criminal career!

He never dreamed that the police were so hot upon their track, and that they had been traced right over from Neuilly.

"Open--in the name of the law!" was again repeated, loud and commanding, followed by a sharp rapping.

For a few seconds Adolphe stood motionless, his fist still clenched, his terrified eyes fixed upon the door. He seemed rooted to the spot.

"Open this door--or we shall break it down!" shouted the police-officer on the stairs.

Then, finding resistance impossible, Ansell's victim was compelled to bow to the inevitable.

He crossed the room slowly, turned the key, and drew the bolt.

Next second three men in plain clothes and a couple of police-agents in uniform burst into the room, and Adolphe found himself seized roughly and secured.

"Just caught you, my young friend!" laughed the police-commissary, with satisfaction. He wore an overcoat and hard felt hat, and carried in his hand an ebony cane with silver k.n.o.b.

Adolphe, in the hands of the two other men in plain clothes, made no reply, but at the moment Mme. Brouet entered at the door, with curiosity, to watch the proceedings.

The commissary, noticing the smashed panel of the bedroom door, ran inside, while the men in uniform quickly searched the place.

"Where is 'The American'?" asked the commissary, of Adolphe. "We know he is here, somewhere. You need not affect innocence, for your hand tells the truth. You and he did the job at the Baron de Rycker's, and you left a large blood-stain behind. What have you done with the stolen property--eh? Now, out with it! Give it up, and it will be better for you when in court."

"I haven't any," protested the young man. "Ralph has it all."

"Where is he?"