Kennedy picked up his apparatus.

"You will think over my proposition?" asked Jacot, as we left.

"And let you know in a day or two," nodded Kennedy.

As we walked up Fifth Avenue, I confess to have felt all at sea. Who had the real masterpiece? Was it Faber, or Jacot, or was it someone else? If Rita had warned Faber against us, and Leila had warned Jacot, which had copy and which original? Or were they both copies and had the original been hidden? Had it been stolen for money or had some fiend with a knowledge of this mysterious ergot stolen it simply for love of art, stopping not even at murder to get it?


CHAPTER XXI

THE RADIOGRAPH WITNESS

It was apparent that quick action was necessary if the mystery was ever to be solved. Kennedy evidently thought so, too, for he did not wait even until he returned to his laboratory to set in motion, through our old friend, Commissioner O'Connor, the machinery that would result in warrants to compel the attendance at the laboratory of all those interested in the case. Then he called up Dr. Leslie and finally Dr. Blythe himself.

Back again in the laboratory, Kennedy employed the time in developing some plates of the pictures he had taken, and by early evening, after a brief study of them, his manner indicated that he was ready.

Dr. Leslie, whom he had asked to come a little before the rest, arrived early, and a few moments later Dr. Blythe, very much excited by the message he had received.