ss would be more
ready to give him up than to shield him.

But Ouaouaoua brusquely made a right-about face and headed toward the
Boulevard des Batignolles.

"Are we going to keep this up much longer?" inquired Wulf, who by this
time was breathless and weary.

"You can go if you like," growled Juve without turning his head. In his
intense absorption, Juve failed to notice the menacing and ironical look
the officer directed at him.

Ouaouaoua now turned down the Rue Notre-Dame-de-Lorette hastening his
speed. The two men had some difficulty in keeping up with him. Suddenly
he disappeared at the corner of the Rue Saint Lazare and the Rue
Lamartine. Juve sprang forward just in time to see the white draped
figure vanish down the stairs leading to the underground Station of the
Nord-Sud.

The Station was lighted and the ticket windows open. The morning's
traffic had begun.

"Have you just seen a queerly dressed man?" he asked one of the porters.

"He has just bought his ticket, Monsieur."

Juve flung down a coin, seized two coupons and without waiting for the
change hurried onto the platform. The first morning train was waiting,
due to start in five minutes. A quick search through the carriages
disclosed the object of Juve's search. He was standing in the first
carriage by the door of the driver's compartment. While Juve eyed him
eagerly, the Primitive Man in turn was watching the detective.

The conductors and employes were standing gossiping by the ticket
office, and the station was almost deserted at this early morning hour.

Juve remained on the platform with Wulf. As a preliminary to making his
arrest, he took out his revolver, and held it in the palm of his hand.
Suddenly he gave a yell and sprang forward. Ouaouaoua, taking advantage
of the engine driver's absence, had entered his compartment and pulled
the levers.

In a moment the train was under way. As Juve made a jump on board, Wulf
tried to restrain him, and in the scuffle knocked the revolver out of
the detective's hand. To the consternation of the train's crew left
behind in the station, the train was now gathering speed. Their shouts
in turn alarmed the few passengers, who regarded the precipitate
entrance of Juve in amazement. Finally a cry from the powerful lungs of
Wulf was heard above all the other noises. A name shouted in terror:

"Fantomas!"

A rush was instantly made to seize the fool or the madman who had
started the train, but a revolve