midnight
Leave me . ' '' ` Remember , at midnight , your ladyship , ' said I , and left her ; but when I had closed the door of the apartment , I imagined that I heard her give utterance to a scornful laugh . However , I attributed it to her gratification at the death of Lagrange , and descending to the wine cellar , I busied myself in washing away the stains of blood from the floor . How impatiently I longed for the arrival of midnight ! the hour that was to bring with it the reward of my crime ! `` During the evening , I paid a visit to a noted '' _ boozing ken _ '' in St. Giles ' , which bore the very suitable appellation of the `` Jolly Thieves . '' Here I engaged two desperate fellows of my acquaintance -- -LRB- for I went on a _ crack _ , now and then , myself , just to keep my hand in , -RRB- -- to make away with the body of Lagrange ; they were to come to the rear of my master 's house , an hour after midnight , provided with a sack and some means of conveyance ; and , for a liberal reward , they promised to carry off the corpse , and , having attached a heavy weight to it , sink it in the Thames , -- although I felt assured in my own mind , that , instead of giving it to the fishes , they would make a more profitable disposition of it , by selling it to some surgeon for dissection ; -- body-snatching being a part of their profession , as well as burglary and murder .