sible。 Les femmes； they look so much alike nowadays that one identifies them more by their clothing than by their faces。 Ada Mason was the same height as your daughter。 Dressed in that very sumptuous fur coat and the little red lacquer hat jammed down over her eyes； with just a bunch of auburn curls showing over each ear； it was no wonder that the conductor was deceived。 He had not previously spoken to Mrs Kettering； you remember。 True； he had seen the maid just for a moment when she handed him the tickets； but his impression had been merely that of a gaunt； black…clad female。 If he had been an unusually intelligent man； he might have gone so far as to say that mistress and maid were not unlike； but it is extremely unlikely that he would even think that。 And remember； Ada Mason； or Kitty Kidd； was an actress； able to change her appearance and tone of voice at a moment's notice。 No； no； there was no danger of his recognizing the maid in the mistress's clothing； but there was the danger that when he came to discover the body he might realize it was not the woman he had talked to the night before。 And now we see the reason for the disfigured face。 The chief danger that Ada Mason ran was that Katherine Grey might visit her partment after the train left Paris； and she provided against that difficulty by ordering a dinner basket and by locking herself in her partment。〃
〃But who killed Ruth … and when？〃
〃First； bear it in mind that the crime was planned and undertaken