twelve o'clock
`` This is too bad , '' said Jevons . `` You ought to be looking after Charlie . Why _ are n't _ you looking after him ? '' `` Charlie , '' she said , `` died three hours ago -- at twelve o'clock . '' It was n't five hours since we had left her with him in the nun 's cell under the crucifix . I do n't think I had realized it before , but now it came over me as a new and strange thing , how little he had mattered . Then it struck me that Jevons must have known it all the time .