"And then again, Inspector," I went on, determined to talk to him while I had the chance, "if there was no intruder, where, in your opinion, do all those clues point to? Mr. Lawrence thinks them of little value, but as a detective, I'm sure you rate them more highly. Granting the hat-pin indicates a woman's work, what about the man's handkerchief?"
"No clues mean anything until they are run down," said Mr. Crawford, looking at me gravely; "I'm not sure that the handkerchief and ticket stubs and time-table, and all those things, weren't the property of Mr. Pembroke; but the only way to be sure is to trace them to their owner, and this is the next step that ought to be taken. This is not a simple case, Mr. Landon; it grows more complex every minute. And please remember I have not said I suspect Miss Pembroke, either of guilt or of complicity. She may be entirely innocent. But you must admit that there is sufficient circumstantial evidence to warrant our keeping her in view."
"There isn't any evidence at all, circumstantial or otherwise, against her!" I declared, hotly; "you merely mean that she was in this apartment and so had opportunity to kill her uncle if she wanted to. But, I repeat, you haven't a shred or a vestige of evidence,—real evidence,—against her."
"Well, we may have, after some further investigation. As you know, the whole matter rests now for a few days; at any rate, until after the funeral of Mr. Pembroke, and until after the return of Mr. Leroy."
"Do you know Graham Leroy?" I asked, suddenly.
It must have been my tone that betrayed my desire to turn suspicion in any new direction, for the Inspector's grey eyes gleamed at me shrewdly. "Don't let any foolishness of that kind run away with your wits," he said; "Graham Leroy is too prominent a man to go around killing people."
"That may be so; but prominence doesn't always preclude wrong doing," I said, rather sententiously.
"Well, don't waste time on Leroy. Follow up your clues and see where they lead you. Greater mysteries than this have been solved by means of even more trivial things than a handkerchief and a few bits of paper. To my mind, the absence of the other half of that hat-pin is the most remarkable clue we have yet stumbled upon. Why should the murderer break it off and carry it away with her?"
"The doctors have explained that because it was broken off, it almost disappeared from sight; and had it done so, the crime might never have been suspected. Surely this is reason enough for the criminal to take the broken pin away."
The Inspector nodded his head. "Sure," he agreed. "With the spectacular hat-pins the women wear nowadays it might have proved an easy thing to trace. However, it is necessary that I search all the rooms of this apartment for it."