atching the
body of the woman. I'm going to take Gaspard uptown and have a look at
that part of the city where Harrigan left his passengers."

Nick and Gaspard went to the Thirty-third street station of the Sixth
avenue elevated road.

They walked to the edge of the platform on the uptown end.

Suddenly Gaspard gave a violent start. He uttered an exclamation of
surprise and pointed across the tracks.

"What is it?" cried Nick.

"The man who was in room B!" exclaimed Gaspard. "I am sure of it!"

At that instant a downtown train rushed into the station, cutting off
Nick's view.

And a half-second later an uptown train pulled in on their side. Nick
pushed open a gate before the train had fairly stopped. He dragged
Gaspard after him.

The gateman tried to stop them, but Nick pushed the fellow in the car so
violently that he sat down on the floor.

Then the detective pulled the other gate open, and, still dragging
Gaspard, sprang down in the space between the tracks.

The other train was just starting. Nick leaped up and opened one of the
gates.

Gaspard stood trembling. Excitement and terror rendered him incapable of
action.

Nick reached down, and, seizing the man by the shoulders, lifted him up
to the platform of the car as if he had been a child of ten.

"Look back," cried the detective, pushing Gaspard to the other side of
the car. "Is your man still at the station?"

Two or three men were there, having, apparently, just missed the train.

It seemed possible that the criminal--if such he was--had seen Gaspard
point, and had been shrewd enough not to board the car.

But Gaspard looked back and declared that his man was not there.

"Good," said Nick. "He must be on the train. We have him sure."

CHAPTER III.

JOHN JONES.

"I want you!" whispered Nick.

How many luckless criminals have been startled by those words! How many
have seen the prison or the gallows rise before them at the sound!

In this case, however, the words seemed to produce less than the
ordinary effect.

The man to whom they were addressed turned suddenly toward the
detective, but did not shrink or tremble.

"I beg your pardon," said he; "I didn't quite understand what you said."

The man's coolness made Nick even more in doubt about Gaspard's
identification.

After boarding the train they had walked through it hurriedly, and in
the car next the engine Gaspard had clutched Nick's arm, whispering:

"There is your