'You've got everything there, chief,' he said.
Burke smiled and folded the piece of paper. He pocketed it. The next day it would be typed and filed - a record of everything that Doctor Zerndorff had said. This would remain as secret police data.
There was a knock at the door.
'Come in,' called Cardona.
A tall, stoop-shouldered man entered. He was clad in overalls. His face was a dull white. He carried a bucket and mop.
Cardona grinned. This was Fritz, the janitor, the faithful servitor of police headquarters.
'Want to clean up, Fritz?' asked the detective.
'Yah,' was the reply.
'Well, we're going. You're on the job late again, aren't you?'
'Yah.'
Inspector Burke looked at the janitor. He smiled and shook his head.
'I never saw the like of you, Fritz,' he observed. 'Just because we work late, you work late. I wish some of the force would profit by your example.
'Come on, Joe. We'll let Fritz finish up.'
As the men left the room, Fritz was at work. He was dull, slow, and methodical. He continued his task while the footfalls of the departing men echoed from the corridor. Finally he reached the desk where Inspector Burke had been seated.
Here Fritz laid aside his mop, resting it against the wall. From his overalls he drew forth a sheet of thin paper. He studied the surface of the desk and laid the paper upon it. He pressed the sheet flat and rubbed it with his fingers.
His hand was a strange one for a janitor. It was long and supple, and moved with the smoothness of a musician's hand.
Fritz laid the sheet of paper aside. He drew forth a rag and carefully polished the surface of the desk. He put the paper on the desk and finished his mopping.
Then he returned to the paper and carefully rolled it into a tube which he inserted beneath his overalls. He left the room, walked along the corridor to a locker, removed his overalls and put them away. He stowed the mop and bucket in a corner.
He walked with cumbersome step along the corridor until he reached the outside door and stepped out.
A policeman was standing there.
'Good night, Fritz,' he called.
'Yah,' was the grunted reply.
Fritz shambled around a corner and entered the silence of a narrow alley. Then his form merged with the blackness. Fritz, the janitor, literally had vanished.
A coupe stood a short distance down the alley. Its door seemed to open of its own accord. There was an almost inaudible sound of some garment being swished along the upholstery of the car.
A few moments later, the coupe pulled away. It rolled by police headquarters, then went rapidly uptown, and stopped in another obscure parking place. Here, again, the door seemed to open automatically. Not even the closest observer could have seen a black-clad figure emerging from the interior of the car.
Ten minutes later, a light clicked in a small room. A green-shaded lamp cast a luminous circle upon the surface of a table.
Two hands appeared in the lighted spot. They were those same long-fingered hands that had wiped the desk in police headquarters. The only difference lay in the left hand. Upon it glowed a mysterious gem, a fire opal that shone with the peculiar dim spark of a dying ember.
The hands of The Shadow were at work!
Those hands were both nimble and active. They constantly disappeared and reappeared, each time with a definite purpose.
They brought into view that same rolled sheet of thin paper that Fritz the janitor had pressed upon his desk in police headquarters. The hands spread out the paper.
One fingernail scratched the corner of the sheet and made a slight line in a waxy surface. The other hand produced a small vial that contained a black powder. This was shaken upon the flattened sheet of paper.
The substance was graphite. The fingers rubbed the black powder upon the smooth paper.
The result was immediate. It explained exactly what had happened. The surface of Inspector Burke's desk had been rubbed with wax. His writing had left invisible impressions, pressing through the paper upon which he had written.
The waxy surface, with its indentations, had been recorded on the thin sheet of paper. Now the graphite revealed a blackened scrawl, in reverse.
The hands raised the thin sheet, turned it over, and held it before the bright light. There, in plain writing was revealed the complete report written by Inspector Burke. Every detail of his interview with Doctor Heinrich Zerndorff was now plain to The Shadow.
The thin paper remained before the light. Hidden eyes were studying it. A mind in the darkness was remembering every detail.
The paper was crumpled and thrown away. The hands dropped to the table. They brought a pad and pencil into view.
The right hand began to write, forming beautiful letters that seemed to represent exact and carefully chosen thoughts.
'Doctor Zerndorff,' the hand wrote, 'has chosen a wise and careful course. He has a keen brain. Yet he has accepted the obvious - through ignorance of certain facts.
'He has, as yet, received no tangible information from Detective Cardona. Even when he gains it - as he will - he may not realize what lies behind these events.
'He suspects a mastermind. He is correct. He suspects terrorism. There, he is incorrect.'
An envelope appeared upon the table in place of the pad and paper. It bore the words: 'Clippings from Clyde Burke.'
The hands brought forth the clippings. Each was an account of a different explosion. Conspicuous in each was a list of those who had been killed.
A long, slender forefinger ran down the list of names in the first clipping, which bore the notation 'Wall Street Explosion.'
The finger stopped upon one name - that of Richard Pennypacker, who was listed as a broker, age forty- two.
Into view came a typed list, which was headed: 'Men Concerned With Hubert Banks.' In that list appeared the name of Richard Pennypacker; beneath it, the following notation: Stockbroker. Has known Banks seven years. Acquainted with important details concerning Banks'
financial status.
Next the hands touched a clipping that bore the notation 'Grand Central Explosion.' Here the finger found another victim's name - Glen Houghton, listed as an attorney, thirty-one years old. This name was checked.
The fingers slipped across the table to the typewritten list. There appeared the same name - Glen Houghton. Under it was the notation:
Young lawyer associated with the concern of Whitmeyer Barton, attorneys-at-law. This concern has handled legal affairs for Mr. Banks during the past twenty years. Houghton has handled certain details pertaining to Mr. Banks.
A third clipping was under survey. It bore the heading: 'Subway Explosion.' At the top of the list of victims was the name George V. Houston, clubman, age forty-eight.
The hands seemed to consult between themselves as they moved to the typewritten list. There, at the top, was the name George V. Houston. Information appeared beneath it: This man is a frequent visitor to the home of Hubert Banks. Was once engaged to Mathilda Banks, sister of Hubert Banks. Has known the family for many years.
