four o'clock
He pointed to the dark little yard outside the window as he spoke . `` Yes , there is a door , I believe . '' `` Is it locked ? '' `` No ; it is seldom locked till four o'clock ; the clerks use it sometimes , when they go in and out . '' `` Then I shall go out that way , '' said Mr. Dunbar , who was almost breathless in his haste . `` You can send the carriage back to the Clarendon by-and-by . I do n't want to see that girl .