Denison shook his head. “No,” he said, “I shall have some one watch there, anyhow.”

CHAPTER XV
THE ASPHYXIATING SAFE

Denison had scarcely gone to arrange for some one to watch the office that night, when Kennedy, having gathered up his radioscope and packed into a parcel a few other things from various cabinets, announced: “Walter, I must see that Miss Wallace, right away. Denison has already given me her address. Call a cab while I finish clearing up here. I don’t like the looks of this thing, even if Haughton does neglect it.”

We found Miss Wallace at a modest boarding-house in an old but still respectable part of the city. She was a very pretty girl, of the slender type, rather a business woman than one given much to amusement. She had been ill and was still ill. That was evident from the solicitous way in which the motherly landlady scrutinized two strange callers.

Kennedy presented a card from Denison, and she came down to the parlor to see us.

“Miss Wallace,” began Kennedy, “I know it is almost cruel to trouble you when you are not feeling like office work, but since the robbery of the safe at Pittsburgh, there have been threats of a robbery of the New York office.”

She started involuntarily, and it was evident, I thought, that she was in a very high-strung state.

“Oh,” she cried, “why, the loss means ruin to Mr. Denison!”

There were genuine tears in her eyes as she said it.

“I thought you would be willing to aid us,” pursued Kennedy sympathetically. “Now, for one thing, I want to be perfectly sure just how much radium the Corporation owns, or rather owned before the first robbery.”