seven o'clock
Lucy , the girl in attendance , said , when questioned , that she knew nothing of the pin or Mrs. Peterkin 's wraps either , except that on first going up to the room after the lady 's arrival , she found Harold Hastings fumbling them over , and that she sent him out with a sharp reprimand . Harold was then looked for and could not be found , for he had been at home and in bed for a good two hours . Clearly , then , he knew something of the pin ; and Peterkin and his wife said good-night , resolving to see the boy the first thing in the morning , and demand their property . When the Peterkins were gone , Arthur started at once for his room , but stopped at the foot of the stairs and said to his brother : ` Do n't forget to have the carriage at the station at seven o'clock . Gretchen is sure to be there . ' ` All right , ' was Frank 's reply . While Mrs. Tracy asked : ` Who is Gretchen ? '