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HELP!

WISHING FIC LOST, DO NOT REMEMBER WHERE YOU READ OR NAME This post is

fast and that each day my memory fails more.

Someone, by chance, know the name of a traffic where Draco is "hired" by Dumbledore, in a pact to save him, and his mission is to go after Harry, go unstable that I created that Dumbledore is dead, but it saves and from there empizan to send letters, in one of those have relationships but Draco being invisible, and hence I do not remember what else.

If you know, please, tell me the link or pasenme name. THANKS