“Madame Daubreuil?”
“Yes. One is old, and one is young, one dark, and one fair, but, for the purpose of a silhouette on a blind, their profiles are singularly alike. Even I did not suspect—triple imbecile that I was! I thought I had plenty of time before me—that she would not try to gain admission to the villa until much later. She had brains, that beautiful Mademoiselle Marthe.”
“And her object was to murder Mrs. Renauld?”
“Yes. The whole fortune would then pass to her son. But it would have been suicide, mon ami! On the floor by Marthe Daubreuil’s body, I found a pad and a little bottle of chloroform and a hypodermic syringe containing a fatal dose of morphine. You understand? The chloroform first—then when the victim is unconscious the prick of the needle. By the morning the smell of the chloroform has quite disappeared, and the syringe lies where it has fallen from Madame Renauld’s hand. What would he say, the excellent M. Hautet? ‘Poor woman! What did I tell you? The shock of joy, it was too much on top of the rest! Did I not say that I should not be surprised if her brain became unhinged. Altogether a most tragic case, the Renauld Case!’
“However, Hastings, things did not go quite as Mademoiselle Marthe had planned. To begin with, Madame Renauld was awake and waiting for her. There is a struggle. But Madame Renauld is terribly weak still. There is a last chance for Marthe Daubreuil. The idea of suicide is at an end, but if she can silence Madame Renauld with her strong hands, make a getaway with her little silk ladder while we are still battering on the inside of the farther door, and be back at the Villa Marguerite before we return there, it will be hard to prove anything against her. But she was checkmated—not by Hercule Poirot—but by la petite acrobate with her wrists of steel.”
I mused over the whole story.
“When did you first begin to suspect Marthe Daubreuil, Poirot? When she told us she had overheard the quarrel in the garden?”
Poirot smiled.
“My friend, do you remember when we drove into Mer-
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