This group is where you will find all posted chapters on my fanfiction series tentatively titled The Rise and Fall of the Black Empire which includes:

Black, in the Smothering Dark
In which Harry Potter learns that his father is not James Potter, but Sirius Black and makes decisions that will change the course of the wizarding world.

The Hush of War, After Defections
(Previously titled The Defection of the Vindictive, but changed so as not to create confusion.) In which Harry fights a war from the Other Side, feels the effects of betrayal and forgiveness, and finds love in between.