Stockton seemed to be amazed. He arose suddenly and leaned over toward the reporter with hands clenched. There was a glitter of what might have been anger in his eyes.
“What do you know about this? What are you talking about?” he demanded.
“I mean that you had said you did not know where this book was, and meanwhile have it hidden. Why?”
“Have you seen the Bible in my rooms?” asked Stockton.
“I have,” said the reporter coolly.
Now a new determination came into the face of the merchant. The oiliness of his manner was gone, the sanctimonious smirk had been obliterated, the thin lips closed into a straight, rigid line.
“I shall have nothing further to say,” he declared almost fiercely.
“Will you tell me why you tore out the seventh page of the Bible?” asked Hatch.
Stockton stared at him dully, as if dazed for a moment. All the color left his face. There came a startling pallor instead. When next he spoke, his voice was tense and strained.
“Is—is—the seventh page missing?”
“Yes,” Hatch replied. “Where is it?”
“I’ll have nothing further to say under any circumstances. That’s all.”
With not the slightest idea of what it might mean or what bearing it had on the matter, Hatch had brought out statements which were wholly at variance with facts. Why was Stockton so affected by the statement that page seven was gone? Why had the Bible been taken from the Dorchester home? Why had it been so carefully hidden? How did Miss Devan know it was there?
These were only a few of the questions that were racing through the reporter’s mind. He did not seem to be able to grasp anything tangible. If there were a cipher hidden in the letter, what was it? What bearing did it have on the case?
Seeking a possible answer to some of these questions, Hatch took a cab and was soon back at the Dorchester house. He was somewhat surprised to see The Thinking Machine standing on the stoop waiting to be admitted. The scientist took his presence as a matter of course.
“What did you find out about Stockton’s fountain pen?” he asked.
“I satisfied myself that he had not owned a fountain pen, at least recently enough for the pen to have been used in writing that letter. I presume that’s what inquiries in that direction mean.”
The two men were admitted to the house and after a few minutes Miss Devan entered. She understood when The Thinking Machine explained that they merely wished to see the shop in which Mr. Stockton had been found dead.
“And also if you have a sample of Mr. Stockton’s handwriting,” asked the scientist.
“It’s rather peculiar,” Miss Devan explained, “but I doubt if there is an authentic sample in existence large enough, that is, to be compared with that letter. He had a certain amount of correspondence, but this I did for him on the typewriter. Occasionally he would prepare an article for a scientific paper, but these were also dictated to me. He has been in the habit of doing so for years.”
“This letter seems to be all there is?”
“Of course his signature appears to checks and in other places. I can produce some of those for you. I don’t think, however, that there is the slightest doubt that he wrote this letter. It is his handwriting.”
“I suppose he never used a fountain pen?” asked The Thinking Machine.
“Not that I know of,” the girl replied. “I have one,” and she took it out of a little gold fascinator she wore at her bosom.
The scientist pressed the point of the pen against his thumb nail, and a tiny drop of blue ink appeared. The letter was written in black. The Thinking Machine seemed satisfied.
“And now the shop,” he suggested.
Miss Devan led the way through the long wide hall to the back of the building. There she opened a door, which showed signs of having been battered in, and admitted them. Then, at the request of The Thinking Machine, she rehearsed the story in full, showed him where Stockton had been found, where the prussic acid had been broken, and how the servant, Montgomery, had broken in the door at her request.
“Did you ever find the key to the door?”
“No. I can’t imagine what became of it.”
“Is this room precisely as it was when the body was found? That is, has anything been removed from it?”
“Nothing,” replied the girl.
“Have the servants taken anything out? Did they have access to this room?”
“They have not been permitted to enter it at all. The body was removed and the fragments of the acid bottle were taken away, but nothing else.”
“Have you ever known of pen and ink being in this room?”
“I hadn’t thought of it.”
“You haven’t taken them out since the body was found, have you?”
“I—I—er—have not,” the girl stammered.
Miss Devan left the room, and for an hour Hatch and The Thinking Machine conducted the search.
“Find a pen and ink,” The Thinking Machine instructed.
They were not found.
At midnight, which was six hours later, The Thinking Machine and Hutchinson Hatch were groping through the cellar of the Dorchester house by the light of a small electric lamp which shot a straight beam aggressively through the murky, damp air. Finally the ray fell on a tiny door set in the solid wall of the cellar.
There was a slight exclamation from The Thinking Machine, and this was followed immediately by the sharp, unmistakable click of a revolver somewhere behind them in the dark.
“Down, quick,” gasped Hatch, and with a sudden blow he dashed aside the electric light, extinguishing it. Simultaneously with this there came a revolver shot, and a bullet was buried in the wall behind Hatch’s head.
IV
The reverberation of the pistol shot was still ringing in Hatch’s ears when he felt the hand of The Thinking Machine on his arm, and then through the utter blackness of the cellar came the irritable voice of the scientist:
“To your right, to your right,” it said sharply.
Then, contrary to this advice Hatch felt the scientist drawing him to the left. In another moment there came a second shot, and by the flash Hatch could see that it was aimed at a point a dozen feet to the right of the point where they had been when the first shot was fired. The person with the revolver had heard the scientist and had been duped.
Firmly the scientist drew Hatch on until they were almost to the cellar steps. There, outlined against a dim light which came down the stairs, they could see a tall figure peering
