"I'm glad you do," he replied seriously. "How long do you intend to remain in the city?"

"Really I don't know—two, three, four weeks, perhaps. Why?"

"I was just wondering."

Señorita Rodriguez came toward them.

"We're going to play bridge," she said, "and we need you, Isabel, to make the four. Come. I hate to take her away, Mr. Grimm."

Mr. Grimm and Miss Thorne rose together. For an instant her slim white hand rested on Mr. Grimm's sleeve and she stared into his eyes understandingly with a little of melancholy in her own. They left Mr. Grimm there.

[!-- CHAPTER 16 --]

XVI

LETTERS FROM JAIL

For two weeks Signor Pietro Petrozinni, known to the Secret Service as an unaccredited agent of the Italian government, and the self-confessed assailant of Señor Alvarez of the Mexican legation, had been taking his ease in a cell. He had been formally arraigned and committed without bail to await the result of the bullet wound which had been inflicted upon the diplomatist from Mexico at the German Embassy Ball, and, since then, undisturbed and apparently careless of the outcome, he had spent his time in reading and smoking. He had answered questions with only a curt yes or no when he deigned to answer them at all; and there had been no callers or inquiries for him. He had abruptly declined a suggestion of counsel.