two o’clock
`` He is dressing to go to the club ... as he did yesterday . '' When her neighbour had gone , she went into the passage and , availing herself of a moment when there was no one in sight , walked up to the door of No. 129 . The door was locked . She waited all the evening for her neighbour 's return and did not go to bed until two o'clock . On Sunday morning , she resumed her watch . The neighbour went out at eleven . This time he left the key in the door .