Read it through once

They traversed the lower room, slowly, and with caution; for Monks started at every shadow; and Mr. Bumble, holding his lantern a foot above the ground, walked not only with remarkable care, but with a marvellously light step for a gentleman of his figure: looking nervously about him for hidden trap-doors. The gate at which they had entered, was softly unfastened and opened by Monks; merely exchanging a nod with their mysterious acquaintance, the married couple emerged into the wet and darkness outside.