crimes. His reputation was world-wide, and the police of London, and even of America, often called him in to their aid when their own national inspectors and detectives found themselves at the end of their wits and resources.
No one was astonished, then, that the head of the Sûreté had, at the outset of the mystery of "The Yellow Room", telegraphed his precious subordinate to London, where he had been sent on a big case of stolen securities, to return with all haste. Frédéric who, at the Sûreté, was called the "great Frédéric," had made all speed, doubtless knowing by experience that, if he was interrupted in what he was doing, it was because his services were urgently needed in another direction; so, as Rouletabille said, he was that morning already "at work." We soon found out in what it consisted.
What he was continually looking at in the palm of his right hand was nothing but his watch, the minute hand of which he appeared to be noting intently. Then he turned back still running, stopping only when he reached the park gate, where he again consulted his watch and then put it away in his pocket, shrugging his shoulders with a gesture of discouragement. He pushed open the park gate, reclosed and locked it, raised his head and, through the bars, perceived us. Rouletabille rushed after him, and I followed. Frédéric Larsan waited for us.
"Monsieur Fred," said Rouletabille, raising his hat and showing the profound respect, based on admiration, which the young reporter felt for the celebrated detective, "can you tell me whether
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