“Ah, at present I can form no theory as to the motive. If I could I might perchance discover the person responsible for her disappearance,” and I briefly told him of my frantic journey to the Italian capital.

“And now I am going to Strassburg to-morrow,” I added.

“Why to Strassburg?” inquired Doctor Flynn, regarding me fixedly with those keen eyes of his.

“Because Professor Greer is there, and I have an idea that he can tell me something.”

“The Professor is no longer there,” was Langton’s quick interruption. “Half an hour ago I spoke to Ethelwynn on the telephone, and she told me that she had just heard by telegraph from her father that he had left for Linz on his way to Hungary.”

My heart fell within me. Evidently my telegram signed Kirk had scared the man passing himself off as the Professor.

“But I might go on to Linz, or catch him up somewhere in Hungary,” I suggested.

“It would be futile, my dear fellow,” said Langton.

“Why?”

“Well, just at present Professor Greer wishes to be left entirely alone by his friends.”