four o'clock
I leave it all to you -- your sister expects it from you . '' `` And she shall not be disappointed , if God helps us , '' replied the woman , after a short pause : `` but I fear you must leave this house and the town also to-night . '' `` How are we to leave the town ? '' `` I will arrange that ; be ready at four o'clock , for the gates are shut at dusk . I must go now , for there is no time to be lost . '' `` We are in a nice mess now , O'Brien , '' observed I , after the woman had quitted the room . `` Devil a bit , Peter ; I feel no anxiety whatever , except at leaving such good quarters . ''