six o'clock
`` I will come back in about an hour , Miss Stuart . I suppose there is n't any hope that we could both go into the Hilton . '' `` No , I 'm afraid not . Any time before six o'clock will do . I sha n't be here much longer , but you can leave the message with my assistant . And you understand of course that it was purely on your account that I spoke to you . I thought that under the circumstances -- '' The registrar was deep in her letters again .