three o'clock
`` Yes , '' came the voice . `` Are you Herr Koster ? '' I replied in the affirmative , recognising the voice of Baron von Hausen , who said : `` Will you please tell your friend that I have arranged for your visit here , and that you will be welcomed . Be outside the French Embassy at three o'clock , when a yellow car will drive up . Enter it , and you will be brought here . I shall await you . '' And then he wished me good night .