nine o'clock
But in this state of mind , the circumstance made no impression whatever on him . Two nights after this Pietro Vanucci and Andrea sat waiting supper for Gerard . The former grew peevish . It was past nine o'clock . At last he sent Andrea to Gerard 's room on the desperate chance of his having come in unobserved . Andrea shrugged his shoulders and went . He returned without Gerard , but with a slip of paper .