"If she had been struck down, it would have been comprehensible," mused Poirot, "but the man who strangled her slipped up behind and caught her unawares. A little choke—a little gurgle—that is all that would be heard, and then afterwards—that smashing blow on her face. Now why? Did he hope that if the face were unrecognizable she might not be identified? Or did he hate her so much that he could not resist striking that blow even after she was dead?"
Katherine shuddered, and he turned at once to her kindly.
"You must not let me distress you, Mademoiselle," he said. "To you this is all very new and terrible. To me, alas! it is an old story. One moment, I pray of you both."
They stood against the door watching him as he went quickly round the compartment. He noted the dead woman's clothes neatly folded on the end of the berth, the big fur coat that hung from a hook, and the little red lacquer hat tossed up on the rack. Then he passed through into the adjoining compartment, that in which Katherine had seen the maid sitting. Here the berth had not been made up. Three or four rugs were piled loosely on the seat; there was a hat-box and a couple of suit-cases. He turned suddenly to Katherine.
"You were in here yesterday," he said. "Do you see anything changed, anything missing?"
Katherine looked carefully round both compartments.
"Yes," she said, "there is something missing—a scarlet morocco case. It had the initials 'R. V. K.' on it. It might have been a small dressing-case or a big jewel-case. When I saw it, the maid was holding it."
"Ah!" said Poirot.
"But, surely," said Katherine. "I—of course, I don't know anything about such things, but surely it is plain enough, if the maid and the jewel-case are missing?"
"You mean that it was the maid who was the thief? No, Mademoiselle; there is a very good reason against that."