ten o'clock
Beneath the casualness of his tone there lurked a certain curiosity , a willingness to hear details . He heard them . At five minutes to ten , when Constance had yawned , he threw a bomb among them on the hearthrug . `` Well , '' he said , `` I 've got an appointment with Matthew at the Conservative Club at ten o'clock . I must go . Do n't wait up for me . '' Both women protested , Sophia the more vivaciously .