“You’ve certainly followed us up all right, but having overtaken us I should like to ask, if it is not an indiscreet question, what you propose to do next?”
French saw that if he was to retain the help of Captain Davis he would have to be careful how he answered.
“There, Captain, I was going to ask for your kind help, though I feel I have troubled you more than enough already. I’ll tell you what I was thinking over in the train. Suppose for argument’s sake the Yard is right, and that these people really are on board. It is obvious from your search that they’re not here in their own characters, therefore they must be posing as two other people. That, I take it, is what the people at the Yard had in mind also.”
“Well?”
“This is not such an unlikely supposition as it sounds. The woman is, or rather was, an actress, and we know she is a clever one. Not only was she well thought of when on the stage, but she has recently carried off successfully a far stiffer test than that. She crossed from New York to Southampton on the Olympic, and convinced the people on board that she was English, and then she went on to London and convinced the people there that she was an American. I have seen the people in each case—critical, competent people who know the world—and each lot ridiculed the idea that she was not what she seemed. If she could do that, she could surely manage another impersonation. A comparatively simple disguise would do, as there would be nothing to make you or the purser suspect.”
The Captain was listening with considerable interest, but it was evident that his ruffled feelings were not yet entirely smoothed down.
“That may be all very well,” he admitted, “but you have not taken into consideration the evidence of the bookings. 176 passengers booked from Liverpool, and in almost every case their tickets were taken and their staterooms reserved several days in advance. The exceptions in all cases were men. 176 passengers turned up, Mr. and Mrs. Vane among them. But there were only 174 passengers on board when we left Liverpool. You follow what I mean; that all the other passengers on board are accounted for?”
“I see that,” French admitted slowly, “and you may be right. It certainly doesn’t seem easy to answer what you say. At the same time, in the face of the instructions I have had from the Yard, I daren’t do other than go on and sift the thing further.”
“Naturally, but how?”
“I don’t know. I don’t see my way clear as yet. For one thing, I shall have to meet every woman on board, with the special object of trying to penetrate any disguise which may have been attempted. If that fails I may give up the search or I may try something else. I suppose you can take me on as far as Lisbon at all events?”