After I finished Heretic and had to get on with my normal, non-Death Eater existence, it kept popping back into my head. The characters just wouldn't leave. I had (and still have) very clear images of each character and the places they were in. The author has filled every character and space with details that aren't boring, outlining the struggles they face as fate (or, arguably, some other otherworldly force, considering we're dealing with Reapers, Death Eaters, and Angels) intrudes on life.
As usual, the action scenes are gritty, brutal, and peppered with witty dialogue. Lovin' it. An excellent sequel to Hypocrite. Can't wait for the next-in-series.