“Can’t you guess?”
“No.”
I looked cautiously round, and lowered my voice.
“Dr. Bauerstein!” I whispered.
“Impossible!”
“Not at all.”
“But what earthly interest could he have in my mother’s death?”
“That I don’t see,” I confessed, “but I’ll tell you this: Poirot thinks so.”
“Poirot? Does he? How do you know?”
I told him of Poirot’s intense excitement on hearing that Dr. Bauerstein had been at Styles on the fatal night, and added: