About eight o'clock
`` And after all , left him with the means of self-destruction , '' exclaimed Claudia . `` No , they did not . You shall hear . About eight o'clock that night , as the watchman of that ward was pacing his rounds , he heard deep groans issuing from Lord Vincent 's cell . He went and gave the alarm . The warden , the physician , and the turnkey entered the cell together . They found the viscount in the agonies of death . ''