midnight
Alone in prison , and still in the hands of the Holy Office . He reverently closed the eyes of his chum , and covered his face , after which he remained seated by the side of the body of the beloved dead , lost in bitter thought and sorrowful retrospection . He was aroused by hearing the click of the trap-door in the wall as the food was thrust in , and this recalled him to himself . He remembered Harry 's last injunction , that he was to continue the work of cutting through the bars of the grating in order to be ready to escape when midnight came . And he also remembered that Harry had given his sister Mary into his charge , and enjoined him to look after and take care of her . How could he do this if he remained where he was , and lost his life , even as poor Harry had lost his ? No , he must put away his grief and melancholy thoughts until a more convenient season .