seven o'clock
`` Perhaps you will have your wish , '' replied Mr. Caine , with an odd smile . Soon after that the interview came to an end , but Dave and Dan remained in the Embassy building through the day . An attendant was sent out to get them what they needed in linen and other small items . Dinner was to be served at seven o'clock , and , as Mr. Caine did not wish the presence of the young officers from the Mediterranean Fleet in his house to be known , it was arranged that they should dine in a smaller room alone with Mr. Lupton . At six , however , the Ambassador sent in haste for Dave to come to his office . `` That invitation does n't seem to include me , '' remarked Dalzell , rather ruefully , as he glanced up from a book he was reading in the Embassy library . `` I 'm afraid it does n't , '' Dave returned .