four o'clock
`` Oh , it 's perfectly safe , '' he answered . `` She could go alone here as well as in Lloydsboro Valley , and with Hero she could have nothing to fear . '' `` I want you to rest awhile first , '' said Mrs. Sherman . `` At four o'clock you may go . '' Leaving Hero comfortably stretched out asleep in the parlour , Lloyd went back to her room . She lay down for a few minutes across the bed and closed her eyes . But she could not sleep with so many interesting sights in the street below .