The footsteps drew near, the door opened and a light from an electric lantern similar to the one Juve had used, was thrown into the room.

The individual advanced to the bed, all unaware of Juve's presence. Stooping down, he began feeling the foot of one of the bedposts, which at this point formed a bulge. In an instant the wood parted and disclosed a hollow in which lay a jewel case. The jewel case contained the famous red diamond.

Juve's heart began to thump as he watched the man open the case and take out the diamond. Its facets reflected the light, multiplying the gleams and bringing into relief the features of the robber.

Then it was that the detective uttered a great cry, a cry of agony, of anger and of triumph. The man was wrapped in a great cloak, his face hidden by a black mask, but there was no mistaking his identity. It was Fantômas.

Juve's cry called forth another, ferocious and menacing, and then in a moment the room was plunged into darkness and the two men sprang at one another. Two revolver shots rang out. The dancers heard them in the ballroom and stopped dancing. The musicians heard them and ceased playing.

At once a stampede ensued.

Two officers of the guard rushed to the door leading to the King's apartments, and flung it wide open. One of them turned on the electric light and, followed by the frightened guests, entered the King's bedchamber.

At the foot of the bed, struggling in a long cloak, a man with his hands over his face lay moaning. By his side was a smoking revolver, and on the ground the empty jewel case.

"Arrest him!" somebody cried.

In a moment a number of hands had seized and bound him. It was noticed that his eyelids were fearfully swollen and the eyes bloodshot.