Darren Shan said this quote
“ But I also slaughtered you real mother and father. In a moment of mad rage, I took their lives and left you an orphan. If you choose to take my life as a payment for theirs, you will be within your rights and no vampire will hold it against you. Pass judgment on me, Gavner Purl, and let your hand rise or fall as destiny decides it must.-Larten Crepsley ”