"'The spotlight on the floor reveals the girl sobbing over the body of the millionaire,'" he read, aloud, musingly. "H'mm! 'She screams and cries out.' Then the others rush in."

For several moments Kennedy paced the floor of the laboratory, the manuscript open in his hands.

"We rehearsed that, with Werner; and we questioned everyone, too. And remember! Miss Lamar, instead of crying out as she was supposed to do, just crumpled up silently. So"—thumbing over a page—"we work back to scene twelve. She—she was not in that at all. Scene eleven—"

Slowly, carefully, Kennedy went through each scene to the beginning. "Certainly a dramatic opening for a mystery picture," he remarked, suddenly, as though his mind had wandered from his problem to other things. "We must admit that Millard can handle a moving-picture scenario most beautifully."

Whether it was professional jealousy or the thought of Enid, rather than the memory of my own poor attempts at screen writing, I certainly was in no mood to agree with Kennedy, for all that I knew he was correct.

"Here!" He thrust the binder in my hands. "Read that first scene," he directed. "Meanwhile I am going to phone Mackay to make sure he has had the house guarded and to make double sure no one goes near the library. We're going out to Tarrytown again, Walter, and in the biggest kind of hurry."

"What's the idea, Craig?" Kennedy's occasional bursts of mysteriousness, characteristic of him and often necessary when his theories were only half formed and too chaotic for explanations, always piqued me.

He did not seem to hear. Already he was at the telephone, manipulating the receiver hook impatiently. "What a dummy I am!" he exclaimed, with genuine feeling. "What—what an awful dummy!"

Knowing I would get nothing out of him just yet, I turned to the scene, reading as he told me. At first I could not see where the detail concerned Stella Lamar in any way. Then I came to the description of her introductory entrance, the initial view of her in the film. The lines of typewriting suddenly stood out before me in all their suggestive clearness.

The spotlight in the hands of a shadowy figure roves across the wall and to the portieres. As it pauses there the portieres move and the fingers of a girl are seen on the edge of the silk. A bare and beautiful arm is thrust through almost to the shoulder and it begins to move the portieres aside, reaching upward to pull the curtains apart at the rings.