midnight
They waited , expecting to see Jennie 's roommate coming back in a hurry . But there was no disturbance . The clock at the foot of the main staircases had long since struck eleven . Now it tolled midnight . Soon there were creaking of doors , faint rustlings in the corridors , giggling half-suppressed , and then the door of Number 40 opened again softly . `` Oh , gee ! '' exclaimed Sally .