I was disappointed. I had fully expected to obtain from her some clue which might lead to a solution of the mystery of Craig's death. But she was obdurate.
"Lola," I said, taking her trembling hand again, "I wish to tell you something."
"Well, what is it?" she asked.
"Simply this. I think I ought to tell you that, near that seat on the cliff at Cromer, where Craig was found, there was discovered a clear print of a lady's shoe," and I watched her countenance narrowly.
Her face went paler in an instant, and in her eyes showed a quick look of terror. But in a second she had recovered herself, and said—
"That is interesting. Do you think that its presence there gives any clue to the assassin?"
"I don't know," was my reply. I stood before her in wonder. Her perfect sang-froid was truly amazing. "But," I went on, "curiously enough, the same lady's shoe was found in Beacon House, after Gregory's property had been carried off. It fitted exactly the imprint in the sand near the seat."
The only sign that her mind was perturbed by my knowledge was a slight twitching at the corners of her pretty mouth. Yes, she preserved an astounding calm.
"That is curious," she remarked with unconcern.
"Very," I declared, still gazing fixedly into her white face. "And can you tell me nothing further regarding this affair?" I asked, bending to her, and speaking in a whisper.