midnight
`` I wish we could set the air shaft working , '' suggested Sandy . `` Well , we ca n't ! '' Tommy answered with a scornful shrug of his shoulders . `` We ca n't set the whole works going in order to give us a midnight view of the Labyrinth mine . What gets me is , how are we going to find our way back ? There seem to be a good many passages here . '' `` I 've got that fixed all right ! ''