midnight
`` Art thou mad , or tired of life , my Lord of Buchan ? '' he said . `` Knowest thou not thou art amenable to the law , an thou thus deprivest justice of her victim ? Shame , shame , my lord ; I deemed thee not a midnight murderer . '' `` Darest thou so speak to me ? '' replied Buchan , fiercely ; `` by every fiend in hell , thou shalt answer this ! Begone , and meddle not with that which concerneth thee nothing . ''