“Then go call the police, and be quick,” said the young man, as he let go of the boy’s collar and hastened his ascent of the stairs.

The lad continued his precipitous descent to the street, and Nick followed the young man upward. He saw the latter stop on the fifth floor, and disappear through an open door-way.

When Nick reached the same place, he noted with much interest that the No. 59 was painted on the door through which the other man had passed.

Instantly he asked himself:

“Has my mysterious note anything to do with what occurred beyond this door?”

Nick passed through the open door, and found himself inside a large general office used by a law firm.

The name of the firm was also on the door. It was:

Bridgely & Byke,
Attorneys-at-Law.

At the other end of the room a door stood ajar, giving entrance to a private office. Be[{5}]yond this door Nick heard high-pitched voices in altercation.

He rightly guessed that whatever the tragedy might be, its location was in that rear office.